eSelf Study Program 970173The 2017 Audi R8 Electrics, Electronics, and Infotainment SystemsiAudi of America, LLC Service Training Created in the U.S.A. Created 1/2016 Course Number 970173 ©2016 Audi of America, LLC All rights reserved. Information contained in this manual is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of America, LLC., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, nor may these materials be modified or reposted to other sites without the prior expressed written permission of the publisher. All requests for permission to copy and redistribute information should be referred to Audi of America, LLC. Always check Technical Bulletins and the latest electronic service repair literature for information that may supersede any information included in this booklet.This eSSP contains video links which you can use to access interactive media.Revision 1:1/2016iiElectrical system................................................................................. 1Introduction ................................................................................................................................................................1 Control module profiles .............................................................................................................................................9 Exterior lights .......................................................................................................................................................... 27 Audi drive select ....................................................................................................................................................... 31 Multifunction steering wheel .................................................................................................................................. 33Infotainment..................................................................................... 35Sound systems ......................................................................................................................................................... 36 Safety belt microphone ........................................................................................................................................... 38 Antenna overview .................................................................................................................................................... 39Climate control.................................................................................. 41Introduction ............................................................................................................................................................. 41 Passenger compartment ventilation ..................................................................................................................... 42 Refrigerant circuit .................................................................................................................................................... 43Service............................................................................................... 44Inspection and maintenance .................................................................................................................................. 44Self-study programs.......................................................................... 45 Knowledge assessment..................................................................... 46This eSelf Study Program teaches a basic knowledge of the design and functions of new models, new automotive components or technologies. It is not a Repair Manual! All values given are intended as a guideline only. For maintenance and repair work, always refer to the current technical literature.NoteReferenceiiiElectrical systemIntroductionThe 420 A/75 Ah AGM battery of the R8 is located in the luggage compartment. The jump start terminals are located under a service flap adjacent to the battery’s negative and positive terminals. Battery Monitoring Control Module J367 is integrated into the negative battery cable, similar to other current Audi vehicles. The main fuse panel is located on the left hand side of the battery. It includes Battery Interrupt Igniter N253. If N253 deploys, power to the alternator and starter will be de-energized. In addition to other fuses, the main fuse panel contains the high amperage fuses for the electro-mechanical steering and ABS systems.Fuse panel in footwell on rightBatteryMain fuse panel adjacent to battery1Fuse and relay panel below parcel shelfFuse and relay panel in E-box on right641_128Fuse and relay panel in E-box on left2Installation locations of control modulesDescriptions for the precise locations of the control modules and instructions for installation and removal can be found in ElsaPro. Some of the control modules shown in this overview are optional equipment and may not be installed in the vehicle.J387A28J521 J519J104 J849 J492 J500 J844 E87 J587 J234J792 J527 J285 J764 G85 J136J745 A32 J533J386Key:A28 Right Led Headlamp Power Output Module 2 A32 Left Led Headlamp Power Output Module 2 E87 Front A/C Display Control Head J250 Electronic Damping Control Module J285 Instrument Cluster Control Module J386 Driver Door Control Module J387 Front Passenger Door Control Module J393 Comfort System Central Control Module J492 All Wheel Drive Control Module J500 J502 J519 J521 Power Steering Control Module Tire Pressure Monitoring Control Module Vehicle Electrical System Control Module 1 Front Passenger Memory Seat Control ModuleG85 Steering Angle Sensor J104 ABS Control Module J136 Memory Seat/Steering Column Adjustment Control Module J217 Transmission Control Module J234 Airbag Control Module3J772 J525 J250J623J794 J393J217J540J502 J886J624 J1006641_043J525 J527 J533 J540 J587 Digital Sound System Control Module Steering Column Electronics Control Module Data Bus On Board Diagnostic Interface Electromechanical Parking Brake Control Module Selector Lever Sensor System Control ModuleJ794 Information Electronics Control Module 1 J844 Automatic High Beam Assist Control Module J849 Sensor Electronics Control Module J886 Seat Belt Microphone Control Module J1006 Transmission Control Module 2J623 Engine Control Module J624 Engine Control Module 2 J745 J764 J772 J792 Cornering Lamp And Headlamp Range Control Module Electronic Steering Column Lock Control Module Rearview Camera System Control Module Active Steering Control Module4TopologyThe topology shows all control modules with connectivity to the bus systems. Some of the control modules shown here are optional or country-specific equipment or are scheduled for introduction at a later date.Front Passenger Windshield Wiper Motor Control Module J584 Wiper Motor Control Module J400 Garage Door Opener Control Module J530Rain/Light Recognition Sensor G397Humidity Sensor In Fresh Air Intake Duct G657 Air Quality Sensor G238Humidity Sensor G355Light Switch E1High Pressure Sensor G65Vehicle Electrical System Control Module J519Left Auxiliary High Beam Bulb M67Driver Door Control Module J386 Data Link ConnectorFront Passenger Door Control Module J367Right Auxiliary High Beam Bulb M68Front Passenger Door Control Module J387Alternator CGarage Door Opener Control Head E284Memory Seat/Steering Column Adjustment Control Module J136Data Bus On Board Diagnostic Interface J533Anti-Theft Alarm System Sensor G578Front Passenger Memory Seat Control Module J521Transmission Control Module J217Engine Control Module J623Rear Spoiler Control Module J223Transmission Control Module 2 J1006Engine Control Module 2 J624Comfort System Central Control Module J393Selector Lever Sensor System Control Module J587Airbag Control Module J234Alarm Horn H12Electronic Steering Column Lock Control Module J764Passenger Occupant Detection System Control Module J706Key: Convenience CAN Powertrain CAN Extended CAN5Anti-Theft Immobilizer Reader Coil D2Display and Operation CAN Diagnostics CAN FlexRayThe FlexRay topology does not represent the actual configuration of the control modules. This also applies to the control modules on the MOST bus.Digital Sound System Control Module J525Multimedia System Control Head E380Information Electronics Control Module 1 J794Instrument Cluster Control Module J285Flap Control Servomotors 1 ­ – 6Seat Belt Microphone Control Module J886Fresh Air Blower Control Module J126Front A/C Display Control Head E87Rearview Camera System Control Module J772Multifunction Steering Wheel Control Module J453Steering Column Electronics Control Module J527Tire Pressure Monitoring Control Module J502Steering Angle Sensor G85Electromechanical Parking Brake Control Module J540ABS Control Module J104Automatic High Beam Assist Control Module J844Electronic Damping Control Module J250Power Steering Control Module J500Sensor Electronics Control Module J849Cornering Lamp And Headlamp Range Control Module J745 Left LED Headlamp Power Output Module 2 A32All Wheel Drive Control Module J492Active Steering Control Module J792Right LED Headlamp Power Output Module 2 A28641_044aModular Infotainment Platform (MIB) CAN Chassis CAN bus LIN busSub-bus systems MOST bus LVDS6Overview of the bus systemsBus system Powertrain CAN Convenience CAN Chassis CAN bus Extended CAN Display and Operation CAN Modular Infotainment Platform (MIB) CAN Diagnostics CAN FlexRay MOST bus (150) Cable color Configuration Electrical two-core bus system Electrical two-core bus system Electrical two-core bus system Electrical two-core bus system Electrical two-core bus system Electrical two-core bus system Electrical two-core bus system Electrical two-core bus system Fiber-optic bus system Max. data transfer rate 500 kbit/s 500 kbit/s 500 kbit/s 500 kbit/s 500 kbit/s 500 kbit/s 500 kbit/s 10 Mbit/s 150 Mbit/s Property not single wire capable not single wire capable not single wire capable not single wire capable not single wire capable not single wire capable not single wire capable not single wire capable Ring structure: an open circuit will result in total system failure Capable of single-core operation not single wire capable not single wire capableLIN bus Sub-bus system LVDSElectrical single-core bus system Electrical two-core bus system Electrical two-core bus system20 kbit/s 500 kbit/sapprox. 200 Mbit/sMOST 150 The MOST 150 bus was first used in the 2015 Audi A3 and subsequently in the 2016 Audi TT and 2017 Audi Q7 models. In the Audi R8 up to three control modules are integrated in the MOST ring in the following order: ›› Information Electronics Control Module 1 J794. ›› Instrument Cluster Control Module J285. ›› Digital Sound System Control Module. J794 acts both as the diagnosis manager and as the system manager for the MOST bus. As always with the MOST bus in Audi vehicles, the control modules are interconnected by an electronic ring break diagnostics wire. This line is only required for electronic ring break diagnostics in the event of a fault. FlexRay ABS Control Module J104 and Sensor Electronics Control Module J849 are the only two modules transferring data over the FlexRay data bus. The FlexRay wires are twisted in the same way as the CAN wires. They are additionally sheathed. However, the sheathing does not provide shielding against electromagnetic interference; it only minimizes effects of external influences, such as dampness and temperature on the core’s characteristic impedance. In principle, sections of FlexRay lines can be replaced. Always follow the instructions in ElsaPro regarding replacement of FlexRay wires.LVDS LVDS (Low Voltage Differential Signal) is used for image transfer between Information Electronics Control Module 1 J794 and Instrument Cluster Control Module J285. Unlike with the FlexRay, the sheathing of the LVDS wires not only protects against mechanical stresses and moisture, but also shields against electromagnetic interference. In the event of a fault, LVDS lines must always be completely replaced.Reference For further information about the FlexRay bus, refer to eSelf Study Program 970103, The 2011 Audi A8 Convenience Electronics and Networking Systems. For information about the LVDS and MOST 150 buses, refer to eSelf Study Program 970153, The 2016 Audi TT Vehicle Electrics, Electronics and Infotainment Systems, and eSelf-Study Program 970163, The 2017 Audi Q7 Onboard Power Supply and Networking System.7Special features of the control modules usedThe control modules used in the R8 are adopted from various other Audi models. Because of this, there are differences in enabling, encoding and the Test Plans that can be performed during control module replacement. Some control modules use an old procedure that is based on a comparison of target and actual values. Other control modules use a new procedure. The new procedure adopts, where possible, custom adjustments and activations in addition to the coding of the control module. The following table identifies the old and new modules of the 2017 R8.Old procedure modulesControl module designation Engine Control Module J623 Engine Control Module 2 J624 Transmission Control Module J217 All Wheel Drive Control Module J492 Driver Door Control Module J386 Front Passenger Door Control Module J387 ABS Control Module J104 Power Steering Control Module J500 Cornering Lamp And Headlamp Range Control Module J745 Tire Pressure Monitoring Control Module J502 Steering Column Electronics Control Module J527 Data Bus On Board Diagnostic Interface J533 Active Steering Control Module J792 Sensor Electronics Control Module J849 Electromechanical Parking Brake Control Module J540 Transmission Control Module 2 J1006 Memory Seat/Steering Column Adjustment Control Module J136 Front Passenger Memory Seat Control Module J521 Comfort System Central Control Module J393 Vehicle Electrical System Control Module J519 Address Word 01 11 02 22 42 52 03 44 55 65 16 19 18 3B 53 C2 06 36 46 09New procedure modulesControl module designation Automatic High Beam Assist Control Module J844 Electronic Damping Control Module J250 Airbag Control Module J234 Seat Belt Microphone Control Module J886 Instrument Cluster Control Module J285 Digital Sound System Control Module J525 Front A/C Display Control Head E87 Rearview Camera System Control Module J772 Information Electronics Control Module 1 J794 Selector Lever Sensor System Control Module J587 Address Word 20 14 15 A6 17 47 08 6C 5F 818Control module profilesGatewayDesignation Equipment Installation location Task Data Bus On Board Diagnostic Interface J533 Always installed On the bulkhead at the top left ›› ›› ›› ›› 19 ›› User of Convenience CAN, Powertrain CAN, Chassis CAN, Display and Operation CAN, Extended CAN, Diagnostic CAN and FlexRay buses. ›› LIN master of Battery Monitoring Control Module J367 and Alternator C ›› Not a participant of the Modular Infotainment Platform (MIB) CAN ›› Not a participant of the MOST bus Network system gateway Controller for FlexRay bus Diagnostic master Energy management controlAddress Word Data bus communicationSpecial featuresData Bus On Board Diagnostic Interface J533641_129Connection J533 is the controller for the FlexRay bus. All FlexRay control modules are connected to J533 within various branches. In this configuration J533 is referred to as the "active hub" or "active node". If only one control module is connected to a branch, this is referred to as a "point to point" connection. Only two FlexRay users are connected to J533 in the Audi R8. ›› ›› ABS Control Module J104 is connected to branch 1. Sensor Electronics Control Module J849 connected to Branch 4.J53347 Ω 47 ΩJ10447 Ω 47 ΩBranch 147 Ω47 ΩThis illustration differentiates between the bus positive cable (pink) and the bus negative cable (green) regarding the configuration of the control modules and thus reflects the actual situation. Two resistors each having a resistance of 47 Ω (94 Ω in total) are connected to the end of each branch in the control module. After disconnecting the control module connector, the resistance value of 94 Ω can be measured by connecting a multimeter between the connecting pins of the bus positive and the bus negative at the relevant control module.Branch 447 Ω47 ΩJ849641_1309Onboard power supplyDesignation Equipment Installation location Task Vehicle Electrical System Control Module J519 / also referred to as BCM1 (Body Control Module 1) Always installed In the footwell on the right above the fuse box Exterior lights master and activation of the front lights Limp-home turn signal master in case of failure of J393 Interior lighting master A/C functions ›› Activation of front seat heating ›› Activation of A/C Compressor Regulator Valve N280 and A/C Clutch N25 Integration functions ›› Parking ›› Park assist ›› Activation of front and rear acoustic signal generators Other functions ›› Reading input from the following senders/sensors/switches: ›› Ambient temperature ›› New engine coolant, windshield washer fluid, brake fluid ›› Brake pad wear ›› Hood contact ›› Temperature sensor for seats ›› Start-stop button, rear spoiler, park assist, ESP, hazard warning flashers ›› Activating the following actuators/control elements: ›› Signal horn ›› Windshield washer pump ›› Heating the windshield washer jets ›› Seat heater, front ›› Engine bay lights ›› Interior lights, glove box light Address Word Data bus communication 09 ›› Convenience CAN user ›› J519 is the LIN master for: ›› LIN 1: Light Switch E1, Rain/Light Recognition Sensor G397, Humidity Sensor G355 and Wiper Motor Control Module J400 ›› LIN 2: High Pressure Sensor G65, Humidity Sensor In Fresh Air Intake Duct G657, Air Quality Sensor G238, and Garage Door Opener Control Module J530 ›› LIN 3: Left and Right Auxiliary High Beam Bulbs M67 and M68 Fault finding notes: Regarding the LIN slave configuration, J519 has a duplicated pin. For example, LIN 1 is distributed to 2 pins (A18, C2) which are, however, connected internally within the control module. This means that the control modules connected to pin C2 are also affected in the event of a short circuit to positive or negative at pin A18.Special featureVehicle Electrical System Control Module J519641_13110Comfort/convenience systemDesignation Equipment Installation location Task Comfort System Central Control Module J393 / also referred to as BCM2 (Body Control Module 2) Always installed Below the parcel shelf on the left Central locking system master Turn signal master Integration functions ›› Terminal management system ›› Entry and start authorization ›› Immobilizer (master) ›› Anti-theft alarm system Other functions ›› Reading input from the following senders/sensors/switches: ›› Brake light switch ›› Ignition starter button ›› P signal ›› Central locking antenna ›› Capacitive sensors of door handles ›› Entry and start authorization antennas ›› Activating the following actuators/control elements: ›› Rear lights ›› Signal for dynamic turn signal operation ›› Rear hatch motor ›› Luggage compartment release ›› Fuel tank flap lock ›› Relay for external sockets ›› Terminal 15 relay ›› Luggage compartment lights ›› Rear lighting Address Word Data bus communication 46 ›› Convenience CAN participant ›› J393 is the LIN master for: ›› LIN 1: Garage Door Opener Control Head E284, Anti-Theft Alarm System Sensor G578 and Rear Spoiler Control Module J223 ›› LIN 2: Alarm Horn H12 ›› LIN 3: Electronic Steering Column Lock Control Module J764 and Anti-Theft Immobilizer Reader Coil D2 ›› J393 is the immobilizer system master ›› The central locking antenna is integrated with the control module printed circuit boardSpecial featuresComfort System Central Control Module J393641_13211Driver control modulesDesignation Equipment Installation location Task Driver Door Control Module J386 Always installed In driver's door Controlling the electrical and electronic components in and on the driver's door ›› Reading input from the following senders/sensors/switches: ›› Switches/buttons on the door panel, for example: window lifters, rear hatch release, electric door mirrors, central locking ›› Activating the following actuators/control elements: ›› Lights and components in and on the door trim, turn signals in door mirror 42 Convenience CAN participant J386 reads input from the rear hatch release switch. However, the release motor is activated by Comfort System Central Control Module J393Address Word Data bus communication Special featureDriver Door Control Module J386641_133Designation Equipment Installation location TaskFront Passenger Door Control Module J387 Always installed In front passenger's door Controlling the electrical and electronic components in and on the front passenger's door ›› Reading input from the following senders/sensors/switches: ›› Switches/buttons on the door panel, for example: window lifters, central locking ›› Activating the following actuators/control elements: ›› Lights and components in and on the door trim, turn signals in door mirror 52 Convenience CAN participantAddress Word Data bus communication12Seat adjustmentDesignation Equipment Installation location Task Memory Seat/Steering Column Adjustment Control Module J136 Optional equipment Below the driver's seat Controlling the driver seat adjustment functions ›› Reading input (senders/sensors): ›› Seat adjustment sender ›› Pressure sensors ›› Activating the following actuators/control elements: ›› Seat adjustment motors ›› Compressor for multi-contour seat 36 Convenience CAN participant Regarding the position and pressure state of the seat pneumatics, the seat settings are assigned to the car key. A seat memory, in which various positions are stored using a switch on the door panel, is not available for the Audi R8.Address Word Data bus communication Special featuresMemory Seat/Steering Column Adjustment Control Module J136641_134Designation Equipment Installation location TaskFront Passenger Memory Seat Control Module J521 Optional equipment Below the front passenger seat (not shown) Control of front passenger seat adjustment functions ›› Reading input (senders/sensors): ›› Seat adjustment sender ›› Pressure sensors ›› Activating the following actuators/control elements: ›› Seat adjustment motors ›› Compressor for multi-contour seat 06 Convenience CAN participant As regards the position and pressure state of the seat pneumatics, the seat settings are assigned to the car key. A seat memory, in which various positions are stored using a switch on the door panel is not available for the Audi R8.Address Word Data bus communication Special features13Selector leverDesignation Equipment Installation location Task Address Word Data bus communication Special features Selector Lever Sensor System Control Module J587 Always installed On selector lever ›› Indication of selector lever position ›› Transfer of tiptronic commands 81 Powertrain CAN participant ›› Can only be replaced together with the selector lever housing. ›› Selector lever is not mechanically connected to automatic transmission.Selector Lever Sensor System Control Module J587641_13614Transmission control modulesDesignation Equipment Installation location Task Address Word Data bus communication Special feature Transmission Control Module J217 Always installed In DSG Transmission Mechatronic J743 Monitoring and controlling the automatic transmission shift operations 02 Powertrain CAN participant Immobilizer userTransmission Control Module J217 in DSG Transmission Mechatronic J743641_137Designation Equipment Installation location Task Address Word Data bus communicationTransmission Control Module 2 J1006 Always installed In the engine bay on the left under the engine trim Controlling the auxiliary hydraulics and the parking lock function C2 Powertrain CAN participantAutomatic Transmission Control Module 2 J1006641_13815Engine control modulesDesignation Equipment Installation location Task Engine Control Module J623 Always installed In the engine bay on the right below the engine bay trim ›› Controlling the engine electronic functions for cylinders 1 – 5 ›› Master control unit for engine management ›› Activation of starter relays J906 and J907 01 ›› Powertrain CAN participant ›› J623 is connected via a sub-bus system J624 Immobilizer userAddress Word Data bus communication Special featureEngine Control Module J623641_139Designation Equipment Installation location Task Address Word Data bus communication Special featureEngine Control Module 2 J624 Always installed In the engine bay on the left under the engine trim Controlling the engine electronic functions for cylinders 6 – 10 11 ›› Powertrain CAN participant ›› J624 is connected via a sub-bus system J623 Immobilizer userEngine Control Module 2 J624641_14016AirbagDesignation Equipment Installation location Task Address Word Data bus communication Special feature Airbag Control Module J234 Always installed On the center tunnel below the center console Deployment of airbags, safety belt pretensioners and battery interrupt igniter 15 ›› Powertrain CAN participant ›› LIN master for Passenger Occupant Detection System Control Module J706 J234 sends the safety belt recognition signals to Seat Belt Microphone Control Module J886.Airbag Control Module J234641_141Sensor electronics controlDesignation Equipment Installation location Task Address Word Data bus communication Special feature Sensor Electronics Control Module J849 Always installed On the center tunnel below the center console The control module contains sensors for measuring vehicle acceleration in x, y and z directions, as well as vehicle rotation about the x, y and z axes. 3B FlexRay participant It serves as a functional replacement for ESP Sensor Unit G419.Sensor Electronics Control Module J849641_14217Electronic Stability Control (ESC)Designation Equipment Installation location Task ABS Control Module J104 Always installed In the vehicle front end behind the luggage compartment trim ›› ›› ›› ›› ›› ›› 03 FlexRay participant The control unit can be replaced separately from the valve block using ESD protective mat VAS 6613. Anti lock braking system (ABS) Electronic Stability Control (ESC) Traction Control System (TCS) Electronic Differential Lock (EDL) Torque vectoring Multi-collision brakeAddress Word Data bus communication Special featureABS Control Module J104641_143Parking brakeDesignation Equipment Installation location Task Address Word Data bus communication Electromechanical Parking Brake Control Module J540 Always installed Below the parcel shelf on the left Controlling the parking brake function 53 ›› Chassis CAN participant ›› J540 is also connected to ABS Control Module J104 via a sub-bus systemElectromechanical Parking Brake Control Module J540641_14418Power steeringDesignation Equipment Installation location Task Power Steering Control Module J500 Always installed Connected to steering gear ›› Power steering ›› Servotronic speed-responsive power steering ›› Corrective steering intervention with ESP 44 Chassis CAN participant ›› The control module with power steering motor can only be replaced together with the steering gear.Address Word Data bus communication Special featuresPower Steering Control Module J500641_145Dynamic steeringDesignation Equipment Installation location Task Address Word Data bus communication Active Steering Control Module J792 Optional equipment On the left hand module cross-member The control module calculates the super-imposition angle required to implement the variable steering ratio. 2B Chassis CAN participantActive Steering Control Module J792641_14619Audi magnetic rideDesignation Equipment Installation location Task Address Word Data bus communication Electronic Damping Control Module J250 Optional equipment Below the parcel shelf on the right at the heel plate Adaptation of the damping characteristic 14 Chassis CAN participantElectronic Damping Control Module J250641_147All-wheel driveDesignation Equipment Installation location Task Address Word Data bus communication Special features All Wheel Drive Control Module J492 Always installed On the cover of the main fuse panel adjacent to the battery J492 calculates the clutch pressure required for the all-wheel drive clutch 22 Chassis CAN participant Unlike the previous all-wheel drive clutch systems (Haldex systems), the all-wheel drive clutch system in the Audi R8 uses oil pressure and temperature sensors.All Wheel Drive Control Module J492641_14820High beam assistDesignation Equipment Installation location Task Address Word Data bus communication Special feature Automatic High Beam Assist Control Module J844 Always installed In rear view mirror Automatic activation and deactivation of high beam in response to oncoming traffic 20 Extended CAN participant J844 can only change over the low beam/high beam headlights.Automatic High Beam Assist Control Module J844641_149Light controlDesignation Equipment Installation location Task Address Word Data bus communication Cornering Lamp And Headlamp Range Control Module J745 Always installed On the bulkhead at the bottom right J745 is responsible for calculating auxiliary light functions such as the all-weather light, turning light and static cornering light, as well as for diagnosis of the power modules. 55 ›› Extended CAN participant. ›› J745 is connected to the power modules for the LED headlights via a sub-bus system.Cornering Lamp And Headlamp Range Control Module J745641_15021Steering column electronicsDesignation Equipment Installation location Task Address Word Data bus communication Steering Column Electronics Control Module J527 Always installed On steering column Connects the steering column stalk and the electrical components in the steering wheel to the vehicle's electronic components. 16 ›› Display and operation CAN bus participant ›› J527 is the LIN master for: ›› Multifunction Steering Wheel Control Module J453 J527 transfers the signals from the Access/Start Authorization Button E408 to Comfort Systems Central Control Module J393. The steering angle sensor is integrated in J527, but is connected to the Chassis CAN by its own bus connection.Special featuresSteering Column Electronics Control Module J527641_151Climate controlDesignation Equipment Installation location Task Front A/C Display Control Head E87 Always installed In instrument panel, center Controlling: ›› Temperature ›› Blower speed ›› Air flow distribution 08 ›› Display and Operation CAN bus participant ›› E87 is the LIN master for: ›› Control motors for flap activation 1 – 6 ›› Fresh Air Blower Control Module J126 The seat heater and rear window heater switches are located in E87 where their input is read. However, Vehicle Electrical System Control Module J519 is responsible for activating the seat heaters while Comfort System Central Control Module J393 is responsible for activating the rear window heater relay.Address Word Data bus communicationSpecial featuresFront A/C Display Control Head E87641_15222Rear-view cameraDesignation Equipment Installation location Task Address Word Data bus communication Special features Rearview Camera System Control Module J772 Always installed Below the parcel shelf on the right at the heel plate ›› Reading input from Rearview Camera R189 ›› Processing and sending image data to Information Electronics Control Module 1 J794. 6C Display and Operation CAN participant ›› Control module and camera are two separate components.Rearview Camera System Control Module J772641_153Safety belt microphoneDesignation Equipment Installation location Task Seat Belt Microphone Control Module J886 Always installed Below the parcel shelf on the left at the heel plate ›› Reading input data from the safety belt microphones in the driver's and front passenger's safety belts and from the microphone in the overhead module. ›› Sending data to Information Electronics Control Module 1 J794 A6 Display and Operation CAN participant ›› If Seat Belt Microphone Control Module J886 is de-energized or defective, an internal relay establishes a direct connection between the roof microphone and Information Electronics Control Module 1 J794. ›› J886 was only installed in the Spyder version of the previous R8.Address Word Data bus communication Special featuresSeat Belt Microphone Control Module J886641_15423Tire pressure monitoringDesignation Equipment Installation location Task Tire Pressure Monitoring Control Module J502 Always installed Below a flap in the underbody on the left ›› Pick-up and evaluation of signals from Tire Pressure Sensors G222, G223, G224 und G225 ›› Indication of tire pressures or issuance of warnings to Information Electronics Control Module 1 J794 65 Display and Operation CAN participant ›› The control module sends a PWM signal by cable to the trigger senders in the wheel arches with the command to query the pressure and temperature sensors in the wheel rims. ›› The sensors in the tire valves send the data wirelessly to the control module.Address Word Data bus communication Special featuresTire Pressure Monitoring Control Module J502641_155Instrument clusterDesignation Equipment Installation location Task Address Word Data bus communication Special features Instrument Cluster Control Module J285 Always installed / Audi virtual cockpit In instrument panel Display of information relevant to the driver 17 ›› Display and Operation CAN participant ›› MOST participant ›› J285 is connected the Information Electronics Control Module 1 J794 with an LVDS line. ›› The instrument cluster is not integrated with the immobilizer in the Audi R8.Instrument Cluster Control Module J285641_15624Information electronicsDesignation Equipment Installation location Task Address Word Data bus communication Information Electronics Control Module 1 J794 Always installed In the parcel shelf at the center Controlling the Infotainment systems 5F ›› Display and Operation CAN participant ›› MOST participant ›› J794 is connected to Multimedia System Control Head E380 via the Modular Infotainment Platform (MIB) CAN bus. ›› J794 is the system manager and the ring break diagnostics master for the MOST bus. ›› Connected to the Instrument Cluster Control Module J285 by a LVDS line (image transfer to instrument cluster).Special features641_157Information Electronics Control Module 1 J79425Sound amplificationDesignation Equipment Installation location Task Address Word Data bus communication Special feature Digital Sound System Control Module J525 Installed only with B&O sound system Below the parcel shelf on the left Activating the 13 speakers 47 MOST participant The subwoofer is housed in the passenger side wheel arch and its membrane faces outwards.Digital Sound System Control Module J525641_15926Exterior lightsLED headlightsLED headlights are standard equipment on the R8 V10 and R8 V10 plus.All-weather light / turning lightDaytime running light / side light / fiber optic turn signalHeadlight housing641_165Design trimBackground lightLED high beamLED low beamPower modules for LED headlights "Service"27Special features of the light functionsThe daytime running light is dimmed for the duration of the turn signaling cycle.The low beam and the parking light are used for the Coming Home/Leaving Home function.Turn signalDaytime running light/ parking light641_167Turning light/ all weather light/ intersection lightHigh beamLow beamLight functions Daytime running light Side light Low beam High beam Turning light / static cornering light All-weather light Intersection light Turn signalType of bulb used 6 LEDs with plastic optical fibers Parking light is dimmed if light function is active 11 LEDs 6 LEDs 2 LEDs at 100% and low beam Turning light dimmed to 50% and low beam dimmed to 50% Turning light on both sides and low beam 9 LEDsPower 18 watts 1.8 watts 22 watts 22 watts 7 watts18 watts28Schematic diagram of the activation mechanismLED headlights (Left hand side of vehicle)Voltage supply Left LED Headlamp Power Output Module 1 A31 LEDs for turn signal Activation mechanism: • Daytime running light • Side light • Turn signalLeft Daytime Running Lamp And Position Lamp LED Module L176 LEDs for daytime running light/side lightVehicle Electrical System Control Module J519Voltage supplyLeft LED Headlamp Power Output Module 2 A32 LEDs for low beam LEDs for high beam LEDs for all-weather light/turning light/static cornering light/intersection light Headlight fanCornering Lamp And Headlamp Range Control Module J745External terminal 15 supply641_168Key: Convenience CAN Extended CAN Sub-bus systems Discrete linesActivation Vehicle Electrical System Control Module J519 supplies voltage to Left and Right LED Headlamp Power Output Modules 1, A31 and A27 as well as for Left and Right LED Headlamp Power Output Modules 2, A28 and A32. The power modules A31/A27 are responsible for the daytime running light/side light and turn signal functions. Power modules 2 A32/A28 are responsible for activating the LEDs for low beam, high beam, all-weather light, turning light, static cornering light as well as the headlight fan.Service Headlight range adjustment is not implemented for the headlights on the Audi R8. Cornering Lamp and Headlamp Range Control Module J745 is only used to operate the cornering lights. The LED headlight bulbs cannot be replaced. Only the outer control units can be replaced separately. Optional equipment The LED headlights are combined with High beam assist.29Tail lightsThe tail lights of the Audi R8 are integrated in the rear body side sections and border the bumper cover or the ventilation grilles at the bottom. Only LEDs are used for lighting. The sequential turn signal function has an additional electronic module in the tail light. The sidemarkers for the North American Region are not integrated in the tail lights, but rather have been transferred to the body side sections of the vehicle as separate lights.Rear fog lightBrake light641_173Tail lightBack-up lightTail lightTurn signalActivation The tail lights are activated by Comfort System Central Control Module J393. J393 also determines whether sequential or conventional turn signaling is required. The tail light LEDs are used for the Coming Home/Leaving Home function.Service Neither individual LEDs nor the electronic components for "dynamic turn signal operation" can be replaced on the tail lights. In case of damage, the entire tail light must be replaced.30Audi drive selectFunctional characteristicsThe Audi R8 is equipped with the Audi drive select system. With Audi drive select, it is possible to modify the vehicle characteristic. The mode can be changed when the car is stationary or while driving. The systems shown in the illustration below can be controlled via the Audi drive select system. In the Audi R8 the driver can select between the following drive modes: Comfort, Auto, Dynamic, Individual and Performance. The Audi drive select system can be set using the Audi drive select button in the steering wheel or using the Car menu via Multimedia System Control Head E380. The selected mode is always displayed in the Audi virtual cockpit.Steering Variable steering torqueDynamic steering Variable steering ratiosESC Variable characteristicAccelerator/engine Variable characteristicDamper control Variable damper rateAll-wheel drive Variable power distributionEngine sound Switchable flap control641_174Automatic transmission Variable shift programdrive select Accessible via Car menu; select with rotary push knob31Audi drive select functionThe tables below show the functional characteristics of all systems which form the Audi drive select handling system.Standard equipmentcomfort Accelerator/engine Automatic transmission Steering All-wheel drive ESC Engine sound2) Dynamic steering Damper control2) 2)auto balanced balanced balanced stable full system balanced/sporty3) balanced and indirect balanceddynamic sporty sporty sporty sporty full system sporty sporty and direct sportyindividualbalanced balanced comfortable stable full system balanced balanced and indirect comfortablecomfort, auto, dynamicOptional equipment1)Performance - dry Accelerator/engine Automatic transmission Steering All-wheel drive ESC Engine sound2) 2)Performance - wet performance4)Performance - snow performance4) performance5) sporty performance (neutral in snow) performance sporty sporty and direct comfortableperformance4)performance5) sporty performance (neutral in dry conditions) performance sporty sporty and direct balancedperformance5) sporty performance (neutral in wet conditions) performance sporty sporty and direct balancedDynamic steering Damper control2) tandard with V10 plus S Optional equipment  3) Depending on selector lever position  4) Accelerator map, load shock absorption, idling speed boost, engine sound during acceleration  5) Shift point adjustment, torque increase during upshifting, no automatic upshifting in M mode 1) 2)32Multifunction steering wheelTwo steering wheels are available for the Audi R8. A new multifunction steering wheel, the R8 sport leather steering wheel (PR 2ZC), is standard. The "drive select" and "START ENGINE STOP" buttons are integrated. The individual drive select modes can be selected using the "drive select" button. Because the Audi R8 has a keyless start system, the "START ENGINE STOP" button is used to switch the ignition on and off as well as to start and stop the engine. The optional R8 performance leather steering wheel (PR 2FJ) has 2 additional buttons. ›› The engine sound button adjusts the engine sound directly by opening or closing the exhaust flap. ›› The "wet" performance mode is activated by pressing the Performance button. If performance mode is active, the adjusting ring can be used to select from the following modes: ›› "snow". ›› "wet". ›› "dry". If performance mode is selected, the vehicle switches to an even more sporty setup. The driver can exit performance mode in the following ways: ›› Pressing the Performance button the vehicle now switches back to the previous Audi drive select setting. ›› Pressing the "drive select" button: the vehicle now switches back to the previous Audi drive select setting. ›› Pressing the rotary push knob on the MMI when the Car menu is open: the vehicle now switches back to the previous Audi drive select setting. ›› Switching the ignition off and on again: the vehicle now switches back to the Audi drive select setting "dynamic". Multifunction Steering Wheel Control Module J453 records all button movements and relays the signals to Steering Column Electronics Control Module J527. J527 transfers this information via CAN to the relevant control modules. To ensure a rapid transfer of shift commands, all movements of the steering wheel shift paddles are transmitted by discrete wires to Transmission Control Module 2 J1006. The Start Engine Stop button is also connected directly to Comfort System Central Control Module J393. Multifunction Steering Wheel Control Module J453 is diagnosed using Address Word 16.150 km 150 km 150 km 150 kmDate & timeTire press. loss indicatorkph12:00Engine sound Sport 438km85 °C2.2 bar 24 °C2.2 bar 24 °C2.2 bar 24 °C2.2 bar 24 °C0,0km +22,5°C87 °C12:00Display in Engine sound "Sport" mode641_079Performance snow wet drykphTire press. loss indicator2.2 bar 24 °C 2.2 bar 24 °C2.2 bar 24 °C2.2 bar 24 °C438km85 °C0,0km +22,5°C87 °C12:00Display in Performance mode "snow" setting641_080Performance snow wet drykphTire press. loss indicator2.2 bar 24 °C 2.2 bar 24 °C2.2 bar 24 °C2.2 bar 24 °C438km85 °C0,0km +22,5°C87 °C12:00Display in Performance mode "wet" setting641_081Performance snow wet drykphTire press. loss indicator2.2 bar 24 °C 2.2 bar 24 °C2.2 bar 24 °C2.2 bar 24 °C438km85 °C0,0km +22,5°C87 °C12:00Display in Performance mode "dry" setting641_08233641_083Audi drive select button Audi R8 standard leather steering wheelSTART ENGINE STOP button641_084Audi drive select button Performance button with adjusting ring for selecting the snow, wet and dry modes Audi R8 performance leather steering wheelSTART ENGINE STOP button Engine sound button34InfotainmentAs in the 2016 Audi TT, the second generation of the Modular Infotainment Platform (MIB 2) is installed in the Audi R8. Because the layout of the controls as well as all displays is focused entirely on the driver, the Audi R8 does not have a separate MMI display. All MMI displays are rendered in the Audi virtual cockpit. The operating concept of the Audi TT has also been adopted for the Audi R8. The standard multifunction steering wheel enables the driver to control virtually all functions without looking away from the road.MMI Navigation plus (i8H) with Audi connect (EL3)150 km Telephone Navigation Map Audi connect Settingskph12:00+22,5°CAudi virtual cockpit (9S8) 3D SSD navigation system (7UG)1)) MMI touch (UJ1) Multifunction steering wheel, high version (2PF) AM/FM radio with phase diversity and background tuner Jukebox (approx. 11 GB) DVD drive (audio/video) 2 SDXC card readers Audi music interface with two USB ports and AUX-IN jack (UE7) Audi sound system (9VD) Bluetooth interface for HFP and A2DP (9ZX) SiriusXM® Satellite Radio with 90-day trial subscription Bang & Olufsen Sound System (9VS) (standard on R8 V10, optional on R8 V10 plus) HD radio technology Audi connect INRIX XD® Traffic (req. Audi connect® subscription) Audi music interface with two USB ports BLUETOOTH® streaming audio for compatible devices BLUETOOTH® wireless technology preparation for compatible mobile phones35Sound systemsAudi sound systemThe Audi sound system is standard equipment on the R8 V10 plus. It has five speakers and delivers a total of 140 watts power. The speakers are powered through Information Electronics Control Module 1 J794 and can be diagnosed individually.Left Front Bass Speaker R21Left Front Treble Speaker R20Center Speaker R208641_073Right Front Bass Speaker R23Right Front Treble Speaker R2236Bang & Olufsen Sound SystemThe Bang & Olufsen sound system is standard equipment for the R8 V10 and optional for the R8 V10 plus model. It has 13 speakers with a total power output of 550 watts. The speakers are amplified by Digital Sound System Control Module J525 which is located behind the left seat. It is connected to Information Electronics Control Module 1 J794 via the MOST bus. To ensure there is enough bass volume, a subwoofer is installed in the front passenger footwell in addition to the two woofers in the front doors. The subwoofer membrane is installed facing outwards towards the wheel arch. It can be removed and installed via the footwell after taking out the glove box.Left Front Midrange Speaker R103Left Front Treble Speaker R20Center Speaker 2 R219Left Rear Midrange Speaker R105, Left Rear Treble Speaker R14Left Front Bass Speaker R21Center Speaker R208641_074Digital Sound System Control Module J525Right Front Midrange Speaker R104Subwoofer R211Right Rear Midrange Speaker R106, Right Rear Treble Speaker R16Right Front Bass Speaker R23Right Front Treble Speaker R2237Safety belt microphoneSafety belt microphones are integrated in both safety belts. An additional conventional microphone is installed in the overhead module. Seat Belt Microphone Control Module J886 monitors and controls which microphone is used. The safety belt microphones are only used if the driver’s safety belt is fastened. Otherwise, the microphone in the overhead module is used. The signals from the safety belt microphones are sent first to Airbag Control Module J234 via the Infotainment CAN and then to J886. J886 also receives information about the status of the front passenger - activated or not activated. If the driver’s safety belt is not fastened, nor the passenger side airbag activated, the passenger side microphone is not used. The safety belt microphone consists of three microphone capsules. The wires for the individual capsules are woven into the safety belt. When the safety belt microphone is active, J886 continuously monitors which of the three capsules is delivering the best signal and sends that signal to Information Electronics Control Module 1 J794.641_077Seat Belt Microphone Control Module J886 is not active until it receives a voltage signal from J794 indicating there is a phantom feed the through “micro 1” wire. When activated, J886 has self-diagnostic capability and can be accessed through Address Word A6. If J886 loses voltage or is defective, an internal relay establishes a direct connection between the roof microphone and Information Electronics Control Module 1 J794.Microphone capsulesTerminal 31Terminal 30Connection to infotainment CANInformation Electronics Control Module 1 J794Seat Belt Microphone Control Module J886Driver Microphone 1 R224Front Passenger Microphone 1 R227Microphone Unit In Front Roof Module R164641_07838Antenna overviewThe antennas of the R8 are located throughout the vehicle. Installation is dependent on vehicle specification. Only the antennas needed for a particular feature are installed.Telephone Antenna R65LTE Antenna 2 R306FM AntennaAntenna Amplifier 2 R111LTE Antenna 1 R297GPS Antenna R50TV3/FZV Antenna39AM/FM1 Antenna641_076641_075Antenna Amplifier 3 R112Satellite Antenna R170Antenna Amplifier R2440Climate controlIntroductionThe 2017 Audi R8 is equipped with a single zone automatic climate control system. Six servomotors are used to control air flow and temperature. They are all identical in design and connected in series to Front A/C Display Control Head E87. The servomotors must be programmed via the Basic settings/auto-addressing procedure using the VAS Scan Tool if replaced. E87 is connected to the display and operation CAN bus and can be accessed using the VAS Scan Tool under Address Word 08. Climate control operation is supported by: ›› Sunlight Photo Sensor G107 (discrete wiring to E87). ›› Combined Air Quality Sensor G238 and Humidity Sensor In Fresh Air Intake Duct G657. ›› High Pressure Sensor G65. ›› Humidity Sensor G355. G238/G657, G65 and G355 are LIN bus participants connected to Vehicle Electrical System Control Module J519. Their data is provided to A/C Display Control Head E87 via Data Bus On Board Diagnostic Interface J533.ServomotorsDefroster Door Motor V107641_013Back Pressure Door Motor V71Fresh Air Door Motor V438Temperature Control Door Motor V68Center Vent Adjustment Motor V102Dust and pollen filterFootwell Door Motor V261641_01441Front A/C Display Control Head E87E87 has three turn-and-push knobs. The center turn-andpush knob has a display which can be used to set the cabin temperature. The seat heater buttons are located in a row of buttons above the turn-and-push knob. E87 has two cabin temperature sensors. Depending on software version of control unit E87, either one of or both of the sensors may be active. If both the temperature sensors are active, the hardware computes a valid value from the data provided.Left seat heater buttonButtonsRight seat heater button641_015Interior temperature sensorTemperature adjustment displayInterior temperature sensorPassenger compartment ventilationAs with all Audi models, the R8 has a forced air ventilation system. This prevents the build-up of over-pressure when closing a door. Air flows from behind the parcel shelf towards the ‘B’ pillars and then through the speaker trims towards the Audi Space Frame body. The air flows through body intakes to both vent trims located behind the doors on the exterior of the lower ‘B’ pillars.Inner speaker trims Out vent trims641_01842Refrigerant circuitThe refrigerant circuit has two condensers. They are identical in design and like the two outer engine coolant radiators, are installed at a rotation angle of 180 degrees. The refrigerant tube to and from the expansion valve is the familiar internal heat exchanger design (coaxial refrigerant line). Service operations The high and low pressure service connections for refilling refrigerant are located near the receiver/drier and can be accessed through a flap in the luggage compartment. After replacing the components of the refrigerant circuit, care must be taken to ensure that the system is filled with the correct level of refrigerant oil. The following quantities of refrigerant oil must be added to the refrigerant circuit after replacing the following components: ›› Replacing a single condenser: + 0.33 oz (10 ccm). ›› Replacing both condensers: + 0.66 oz (20 ccm). ›› Replacing the evaporator: + 0.66 oz (20 ccm). The A/C compressor has a direct clutch and is driven by the engine through a drive shaft. An overload cut-out that can interrupt power flow between the engine and compressor in case of compressor failure is integrated in the A/C clutch. R134 refrigerant is used in this vehicle.DrierService connectionsCoaxial refrigerant lineFront A/C Display Control Head E87641_017CondensersCondensation drainA/C compressor43ServiceInspection and maintenanceOverview of maintenance intervals for vehicles in the USAThe Audi R8 is subject to fixed inspection and maintenance intervals in the USA and Canada. The value for the next oil change is 10,000 miles / 365 days for new vehicles.Inspection with oil changeInspection with oil changeOil change serviceOil change service10,000 miles / 1 year20,000 miles / 2 years30,000 miles / 3 years40,000 miles / 4 yearsOil change service 50,000 miles / 5 years641_125Note The specifications in the current service literature generally apply. It is important to comply with the approved oil standard when changing the oil.44Self-study programsFor more information about the technology of the Audi R8, please refer to the following self study programs.SSP 923603 The 5.2l V10 FSI Engine Design and FunctionSSP 992803 Audi Dynamic SteeringSelf-Study Program 970103Self-Study Program 990303The 2011 Audi A8 Convenience Electronics and Networking SystemsSSP 970103 The 2011 Audi A8 Convenience Electronics and Networking SystemsThe 2012 Audi A7 Running Gear and Suspension SystemsSSP 990303 The 2012 Audi A7 Running Gear and Suspension SystemseSelf-Study Program 920243eSelf Study Program 960143The Audi 1.8L and 2.0L Third Generation EA888 EnginesSSP 920243 The Audi 1.8L and 2.0L Third Generation EA888 EnginesThe 2015 Audi A3 Running Gear and Suspension SystemSSP 960143 The 2015 Audi A3 Running Gear and Suspension System1eSelf Study Program 970153eSelf Study Program 970163The 2016 Audi TT Vehicle Electrics, Electronics, and Infotainment SystemsSSP 970153 The 2016 Audi TT Vehicle Electrics, Electronics, and Infotainment SystemsThe 2017 Audi Q7 Onboard Power Supply and Networking SystemSSP 970163 The 2017 Audi Q7 Onboard Power Supply and Networking SystemiieSelf Study Program 990363eSelf Study Program 950163The 2017 Audi R8 IntroductionSSP 990363 The 2017 Audi R8 IntroductionFront final drive 0D4SSP 950163 Front final drive 0D4i i45Knowledge assessmentAn On-Line Knowledge Assessment (exam) is Available for this eSelf-Study Program. The Knowledge Assessment is required for Certification credit. You can find this Knowledge Assessment at: www.accessaudi.com From the accessaudi.com Homepage:›› Click on the “ACADEMY” tab ›› Click on the “Academy site” link ›› Click on the Course Catalog Search and select “970173 - The 2017 Audi R8 Electrics, Electronics, and Infotainment Systems” Please submit any questions or inquiries via the Academy CRC Online Support Form which is located under the “Support” tab or the “Contact Us” tab of the Academy CRC.Thank you for reading this eSelf-Study Program and taking the assessment.46All rights reserved. Technical specifications are subject to change without notice. Audi of America, LLC 2200 Ferdinand Porsche Drive Herndon, VA 2017147970173