NHTSA ID Number: 10118386
Manufacturer Communication Number: SSP 970173
TSB/Document Date: 2017-10-04
Summary
This document contains the eSelf study program regarding the Electrics, Electronics, and infotainment system of the vehicle.
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All-wheel drive
Designation
All Wheel Drive Control Module J492
Equipment
Always installed
Installation location
On the cover of the main fuse panel adjacent to the battery
Task
J492 calculates the clutch pressure required for the all-wheel drive clutch
Address Word
22
Data bus communication
Chassis CAN participant
Special features
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
J492
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20
High beam assist
Designation
Automatic High Beam Assist Control Module J844
Equipment
Always installed
Installation location
In rear view mirror
Task
Automatic activation and deactivation of high beam in response to oncoming traffic
Address Word
20
Data bus communication
Extended CAN participant
Special feature
J844 can only change over the low beam/high beam headlights.
Automatic High Beam Assist Control Module
J844
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Light control
Designation
Cornering Lamp And Headlamp Range Control Module J745
Equipment
Always installed
Installation location
On the bulkhead at the bottom right
Task
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.
Address Word
55
Data bus communication
›› 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
J745
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21
Steering column electronics
Designation
Steering Column Electronics Control Module J527
Equipment
Always installed
Installation location
On steering column
Task
Connects the steering column stalk and the electrical components in the steering wheel to the
vehicle's electronic components.
Address Word
16
Data bus communication
›› Display and operation CAN bus participant
›› J527 is the LIN master for:
›› Multifunction Steering Wheel Control Module J453
Special features
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.
Steering Column Electronics Control Module
J527
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Climate control
Designation
Front A/C Display Control Head E87
Equipment
Always installed
Installation location
In instrument panel, center
Task
Controlling:
›› Temperature
›› Blower speed
›› Air flow distribution
Address Word
08
Data bus communication
›› 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
Special features
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.
Front A/C Display Control Head
E87
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22
Rear-view camera
Designation
Rearview Camera System Control Module J772
Equipment
Always installed
Installation location
Below the parcel shelf on the right at the heel plate
Task
›› Reading input from Rearview Camera R189
›› Processing and sending image data to Information Electronics Control Module 1 J794.
Address Word
6C
Data bus communication
Display and Operation CAN participant
Special features
›› Control module and camera are two separate components.
Rearview Camera System Control Module
J772
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Safety belt microphone
Designation
Seat Belt Microphone Control Module J886
Equipment
Always installed
Installation location
Below the parcel shelf on the left at the heel plate
Task
›› 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
Address Word
A6
Data bus communication
Display and Operation CAN participant
Special features
›› 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.
Seat Belt Microphone Control Module
J886
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23
Tire pressure monitoring
Designation
Tire Pressure Monitoring Control Module J502
Equipment
Always installed
Installation location
Below a flap in the underbody on the left
Task
›› 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
Address Word
65
Data bus communication
Display and Operation CAN participant
Special features
›› 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.
Tire Pressure Monitoring Control Module
J502
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Instrument cluster
Designation
Instrument Cluster Control Module J285
Equipment
Always installed / Audi virtual cockpit
Installation location
In instrument panel
Task
Display of information relevant to the driver
Address Word
17
Data bus communication
›› Display and Operation CAN participant
›› MOST participant
Special features
›› 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
J285
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24
Information electronics
Designation
Information Electronics Control Module 1 J794
Equipment
Always installed
Installation location
In the parcel shelf at the center
Task
Controlling the Infotainment systems
Address Word
5F
Data bus communication
›› Display and Operation CAN participant
›› MOST participant
›› J794 is connected to Multimedia System Control Head E380 via the Modular Infotainment
Platform (MIB) CAN bus.
Special features
›› 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).
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Information Electronics Control Module 1
J794
25
Sound amplification
Designation
Digital Sound System Control Module J525
Equipment
Installed only with B&O sound system
Installation location
Below the parcel shelf on the left
Task
Activating the 13 speakers
Address Word
47
Data bus communication
MOST participant
Special feature
The subwoofer is housed in the passenger side wheel arch and its membrane faces outwards.
Digital Sound System Control Module
J525
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26
Exterior lights
LED headlights
LED headlights are standard equipment on the R8 V10 and
R8 V10 plus.
All-weather light / turning light
Daytime running light / side light /
fiber optic turn signal
Headlight housing
641_165
Design trim
27
Background light
LED high beam
LED low beam
Power modules
for LED headlights
"Service"
Special features of the light functions
The 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.
Daytime running light/
parking light
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Turning light/
all weather light/
intersection light
Light functions
Type of bulb used
Power
Daytime running light
6 LEDs with plastic optical fibers
18 watts
Side light
Parking light is dimmed if light function is active
1.8 watts
11 LEDs
22 watts
6 LEDs
22 watts
Turning light / static cornering light
2 LEDs at 100% and low beam
7 watts
All-weather light
Turning light dimmed to 50% and low beam dimmed to 50%
Intersection light
Turning light on both sides and low beam
9 LEDs
18 watts
28
Schematic diagram of the activation mechanism
LED headlights
(Left hand side of vehicle)
Left LED Headlamp Power Output Module 1
A31
Voltage supply
LEDs for turn signal
Activation mechanism:
• Daytime running light
• Side light
• Turn signal
Left Daytime Running Lamp And Position Lamp LED
Module
L176
Vehicle Electrical System Control Module
J519
LEDs for daytime running light/side light
Left LED Headlamp Power Output Module 2
A32
Voltage supply
LEDs for low beam
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TSB/Document ID: SSP 970173
Replacement Service Bulletin Number:
MFR Communication Date: 2016-02-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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