Alternator
Starter Generator

E1
E67
E265
EX22
EX23

Light Switch
Driver Volume Control
Rear A/C Display Control Head
Switch Module in Instrument Panel, Center
Center Console Switch Module 1

G65
G355
G397
G578
G784

High Pressure Sensor
Humidity Sensor
Rain/Light Recognition Sensor
Anti-Theft Alarm System Sensor
Particulate Sensor

H12

Alarm Horn

J104
J126
J136
J187
J217
J223
J234
J245
J285
J367
J386
J387
J400
J428
J453
J492
J500
J502
J521
J525
J527

ABS Control Module
Fresh Air Blower Control Module
Memory Seat/Steering Column Adjustment
Control Module
Differential Lock Control Module
Transmission Control Module
Rear Spoiler Control Module
Airbag Control Module
Sunroof Control Module
Instrument Cluster Control Module
Battery Monitoring Control Module
Driver Door Control Module
Front Passenger Door Control Module
Wiper Motor Control Module
Control Module for Adaptive Cruise Control
Multifunction Steering Wheel Control Module
All Wheel Drive Control Module
Power Steering Control Module
Tire Pressure Monitoring Control Module
Front Passenger Memory Seat Control Module
Digital Sound System Control Module
Steering Column Electronics Control Module

J528
J530
J587
J605
J623
J685
J706
J764
J769
J770
J772
J775
J792
J844
J853
J854
J855

Roof Electronics Control Module
Garage Door Opener Control Module
Selector Lever Sensor System Control Module
Rear Lid Control Module
Engine Control Module
Front Information Display Control Head
Passenger Occupant Detection System Control Module
Electronic Steering Column Lock Control Module
Lane Change Assistance Control Module
Lane Change Assistance Control Module 2
Rearview Camera System Control Module
Drivetrain Control Module
Active Steering Control Module
Automatic High Beam Assist Control Module
Night Vision System Control Module
Left Front Seat Belt Tensioner Control Module
Right Front Seat Belt Tensioner Control Module

J866
J869
J897
J898
J926
J927
J938
J949

J1100
J1101
J1122
J1135
J1146
J1169
J1170

Power Adjustable Steering Column Control Module
Structure Borne Sound Control Module
Ionizer Control Module
Windshield Projection Head Up Display Control Module
Driver Side Rear Door Control Module
Passenger Side Rear Door Control Module
Power Rear Lid Opening Control Module
Control Module for Emergency Call Module and
Communication Unit
Rear Axle Steering Control Module
Front Information Display Control Head 2
Control Module for Left Front Object Detection Radar
Sensor
Control Module for Right Front Object Detection Radar
Sensor
Windshield Washer Pump Control Module
Fragrance Diffuser System Control Module
Laser Distance Regulation Control Module
Level Control System Compressor Electronics
Mobile Device Charger 1
Close Range Communication Control Module
Close Range Communication Control Module 2

J1183

NOx Sensor Control Module 3

MX3
MX4
MX13

Left Tail Lamp
Right Tail Lamp
Center Tail Lamp

N209
N210
N475
N477

Driver Lumbar Support Adjustment Valve Block
Front Passenger Lumbar Support Adjustment Valve Block
Valve Block 1 in Driver Seat
Valve Block 1 in Front Passenger Seat

R7
R212
R242
R243
R244
R245
R246
R293

DVD Player
Night Vision System Camera
Driver Assistance Systems Front Camera
Front Peripheral Camera
Left Peripheral Camera
Right Peripheral Camera
Rear Peripheral Camera
USB Distributor

U13
U41

Converter with Socket, 12 V-230 V
USB Connection 1

V113
V388
V389
V390
V391
V438
V475
Y7

Recirculation Door Motor
Driver Seat Backrest Blower Fan
Front Passenger Seat Backrest Blower Fan
Driver Seat Cushion Blower Fan
Front Passenger Seat Cushion Blower Fan
Fresh Air Door Motor
Transmission Fluid Auxiliary Hydraulic Pump 1
Automatic Dimming Interior Rearview Mirror

J1019
J1060
J1088
J1089

52

A7 bus systems
The bus systems used in the Audi A7 or similar to the
Audi A8. The only new feature is Connect CAN, which

Bus system

Wire color

Connect CAN

connects Control Module for Emergency Call Module and
Communication Unit J949 to the gateway.

Configuration

Data transfer rate

Electrical bus system

500 kbit/s

FlexRay
The FlexRay topology of the Audi A7 is identical to that of
the Audi A8. However, All Wheel Drive Control Module J492
may also be connected at branch 2A.

J500
94 Ω

J492
2.6 kΩ

Key:
J217 Transmission Control Module
J492 All Wheel Drive Control Module
J500 Power Steering Control Module

J217
2.6 kΩ

J533 Data Bus on Board Diagnostic Interface
Branch 2A
J533

94 Ω

669_183

Reference
For further information about FlexRay, refer eSelf-Study Program 970293, The 2019 Audi A8 Electrics and Electronics.
53

Control modules
Data Bus on Board Diagnostic Interface J533
Brief description

It is not a node of:

J533 (gateway) is installed under the rear seat. It is
accessed with the VAS Scan Tool using Address word 0019.

>> CAN modular infotainment matrix (MIB).
>> MOST bus.

J533 performs the following functions:
It is the LIN master for:
>>
>>
>>
>>
>>
>>

Network system gateway.
Controller for FlexRay bus.
Diagnostic master.
Energy manager for the 12 Volt electrical system.
Energy manager for the 48 Volt electrical system.
Interface for various connect services.

>>
>>
>>
>>

J367
C
J453
U13

Battery Monitoring Control Module.
Alternator (12 Volt alternator).
Multifunction Steering Wheel Control Module.
Converter with Socket, 12 V-230 V.

Special feature:
>> The gateway manages the diagnostic firewall.

It is a node of the following data bus systems:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>

Hybrid CAN.
Convenience CAN.
Convenience CAN 2.
Infotainment CAN.
Dash panel insert CAN.
Extended CAN.
Connect CAN.
FlexRay.
Diagnostics CAN.
Ethernet.

Data Bus on Board Diagnostic Interface
J533

669_184
54

Vehicle Electrical System Control Module J519
(BCM1)
Brief description
The tasks of J519 include reading in numerous sensors and
actuators, the exterior lights and the wipers. Many integrated functions, such as the activation of the seat heating,
are also implemented.

J519 also activates the air conditioning on the Audi A7.
J519 can be accessed with the VAS Scan Tool using Address
word 0009. Climate control functions are now accessed
under this Address word.

J519 performs the following functions:
>> Exterior lighting master.
>> Interior lighting master.
>> Diagnostic gateway for the light control modules.

J519 is the only node of convenience CAN 2. In addition, it
is connected to Driver Assistance Systems Control
Module J1121 and the output modules for the headlights
(output module 1 for headlight) via a private CAN.

Integrated functions:

In addition, the J519 is the master control unit for numerous LIN slaves.

>> Parking.
>> Parking aid.
>> Ambient lighting.
>> Activating the interior light modules.
>> Climate control.

Special feature:
The interior lighting modules of the ambient lighting and
the climate control motors can be connected both as a LIN
series or parallel on the corresponding LIN branch. It is
important to remember this when performing fault
finding. Always consult the correct current flow diagram for
the vehicle in its corresponding equipment version.

669_185

Vehicle Electrical System Control
Module
J519
55

Comfort System Central Control Module J393 (BCM2)
Brief description:

Further integrated functions

>> Has diagnostic address 0046.
>> Node of convenience CAN data bus.
>> Has the following master functions:
>> Central locking system.
>> Immobilizer.
>> LIN master for:
>> LIN1: Anti-Theft Alarm System Sensor G578, Rear Spoiler
Control Module J223.
>> LIN2: Alarm Horn H12.
>> LIN3: Power Rear Lid Opening Control Module J938, tail
lights.
>> Has master function for both near field communication control
modules:
>> Close Range Communication Control Module J1169.
>> Close Range Communication Control Module 2 J1170.

>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>

Terminal management.
Entry and start authorization.
Central locking.
Anti-theft alarm system.
Activation of rear exterior lighting.
Heated rear window.
Turn signal control.
Activation of rear roller blind.
Rear lid release and luggage compartment lighting control.
Tank filler flap locking.
Power latching system for rear lid.
Activation of sliding sunroof.
Activation of sunroof sun blind.
Electronic steering column lock.
Sensor-operated rear lid opening.
Tank sensor management.
Unlocking of doors in an accident in which the crash sensor is
activated.

Comfort System Central Control Module
J393

56

669_055

Instrument cluster
Two different instrument clusters are used for the Audi A7:
>> The analog instrument cluster, also known as the TOP instrument cluster.
>> The Audi virtual cockpit.

The customer is able to personalize both versions in a
personal profile. The profile used is then allocated to the
vehicle key/Audi connect key (or Audi connect key card)
currently in use.
When the vehicle is unlocked, the profile last active with
the key used to unlock the vehicle is loaded and displayed
on the instrument cluster.

Brief description
Instrument Cluster Control J285
>> Equipment:
>> Always installed.
>> Installation location:
>> In instrument panel.
>> Address word:
>> 0017.
>> Data bus communication:
>> Dash panel insert CAN node.

>> MOST bus node.
>> Connected to Information Electronics Control Module 1 J794
via an LVDS wire.
>> Special features:
>> Component protection system node.
>> The instrument cluster is not integrated in the immobilizer.
>> The number and color of the bar graph displays for coolant temperature and fuel level are the same for both instrument cluster
types.

Analog instrument cluster

Fuel gauge

669_058

Coolant temperature gauge

Audi virtual cockpit

Additional displays, for example
with speedometer or selector
lever position

669_057

57

Windshield Projection Head Up Display Control Module J898
Windshield Projection Head Up Display Control Module
J898 projects vehicle information into the driver’s field of
vision. The display seems to appear at a distance of about
6 ft (2 m) away from driver - it appears to be floating above
the hood.

Special windshields are required on vehicles with the
head-up display.

Brief description
>> Address word:
>> 0082
>> Incorporation in data bus systems:
>> J898 is both a node of the dash panel insert CAN and the
MOST data bus.

>> Handling in service:
>> The windshield must be removed before J898 can be removed.
>> J898 is positioned in both outer brackets for head-up display;
the brackets must not be removed during service.
>> No calibration board is used when J898 is renewed in service.

>> Special features:
>> J898 is not a participant of the immobilizer nor of the
component protection system.

Brackets for
head-up display

J898

Order of MOST bus ring nodes

J285

J525

J794

J898

669_206

Key:
J285
J525
J794
J898

Instrument Cluster Control Module
Digital Sound System Control Module
Information Electronics Control Module 1
Windshield Projection Head Up Display Control Module

Wiring colors:
Infotainment CAN
Dash panel insert CAN
MOST bus

669_203
58

Convenience key with sensor-operated rear lid opening
On Audi A7 vehicles equipped with the convenience key
with sensor-operated rear lid opening, the customer can
open and close the rear lid with a foot gesture.

Both sender wires run along the rear bumper horizontally.

Rear bumper with recess for towing bracket