Lights in vehicle interior
C21
C48
C51
C62
C72

Function light in driving profile selection button (Drive Select)
Emergency Flasher Indicator Lamp K6
Open
Power supply to locating light terminal 58xs
Activation of Front Left and Right Footwell Lamps L151 and L152; Rear Left and Right Footwell Lamps L106 and L107

Tail lights

A57
A59
A60
A64
A65
A71
A72
C3
C6
C8
C9
C10
C11
C31

High Mounted Brake Lamp
Left and Right License Plate LEDs X4 and X5
Left Brake /Turn Signal Lamp M56
Right Back-up Lamp Bulb M17 (rear lid light)
Right Tail Lamp Bulb M38 (rear lid light)
Open
Left Rear Fog Lamp Bulb L46 (rear lid light in comb. with LED tail light)
Right Brake Lamp/Turn Signal Bulb 2 (rear lid light in comb. with LED tail light)
Right Rear Fog Lamp Bulb L47 (rear lid light in comb. with LED tail light)
Open
Left Brake Lamp/Turn Signal Bulb 2 M84 (rear lid light in comb. with LED tail light)
Left Rear Side Marker Lamp M37
Left Back-up Lamp Bulb M16 (rear lid light)
Right Brake Lamp/Turn Signal Bulb (side light)

18

Headlights

B1
B2
B4
B5
B10
B20
B21
B22
B23
B32
B36
B39
B45
C5

Open
Open
Left Daytime Running Lamp and Position Lamp Control Module J860 (with bi-xenon lights)
Open
Left Daytime Running Lamp and Position Lamp Control Module J860 (with bi-xenon lights)
Right Front Turn Signal Bulb M7
Right Daytime Running Lamp and Position Lamp Control Module J861 (with bi-xenon lights)
Right Low Beam Headlamp Reflector Motor V295 (with bi-xenon lights without AFS)
Left Low Beam Headlamp Reflector Motor V294 (with bi-xenon lights without AFS)
Right Daytime Running Lamp and Position Lamp Control Module J861 (with bi-xenon lights)
Left Front Turn Signal Bulb M5
Open
Open
Open

Motors

A3
A4
A6
A7
A9
A36
A37
A68
A69

Open
Open
Ground of SAFE function and central locking motors in the door locking unit, rear passenger side*
Passenger Side Rear Central Locking System Motor V540
Rear Lid Central Locking System Motor V53
Driver Side Rear Door Central Locking -SAFE- Motor V537
Passenger Side Rear Door Cental Locking - SAFE- Motor V538*
Ground of SAFE function and central locking motors in the door locking unit, rear driver side
Driver Side Rear Central Locking System Motor V539

Other actuators

A2
A5
B7 / A61
B8 / A62
B9
B46

Driver Seat Heating Element Z6, Driver Backrest Heating Element Z7
Passenger Seat Heating Element Z8, Passenger Backrest Heating Element Z9
Control line for washer pump V5 and rear window wiper motor V12
Open
Left and Right Washer Nozzle Heaters Z20 and Z21
Headlamp Washer Pump V11

Signal lines

A14
C67

"Terminal 15" signal for various control module
Door contact signal for interior light control on overhead module

* Not used in the North American region
19

Electronic Steering Column Lock Control Module J764
Only installed with the Advanced key option.

Installation location

611_012

Tasks and characteristics of the control
module
• Communicating with other control modules via the
Convenience CAN bus
• Locking and unlocking the steering column

Unlocking the steering column
The steering column is unlocked after actuating Access/
Start Authorization Button E408 if a key belonging to the
vehicle has been detected inside the vehicle. After unlocking the steering column, the NO contact and terminal 15
are activated and terminal 50 is requested.

• Terminal management master
• Monitoring the signal from Access/Start Authorization
Button E408
• Immobilizer participant
Locking the steering column
Locking of the steering column can be initiated by the
following two events:

The steering column is only locked if all of the following
conditions have been met:

• Opening the driver's door

•
•
•
•
•

or
• Locking the vehicle with the remote control key, the
Advanced key or the door lock

!

The steering column is unlocked
The vehicle is travelling at speed of 0 mph (0 km/h)
The engine is not running
Terminal 15 and the NO contact have been deactivated
The selector lever is in position “P”

Note
The steering column lock is still implemented mechanically on models ordered without the optional Advanced key.
In these models, the terminals are managed by Electronic Steering Column Lock Control Module J527.
20

Access/Start Authorization Control Module J518
J518 is only installed on vehicles with Advanced key.

Installation location

611_013

Tasks and characteristics of the control
module
• Communicating with other control modules via the
convenience CAN bus

• Activating the locating light in Access/Start Authorization Button E408

• Activating the five antennas for entry and start authorization

• Waking up Vehicle Electrical System Control Module
J519 via a wake-up line after contact with the door
handle sensors is detected

• Monitoring both capacitive sensors in the driver and
passenger door handles

21

Advanced Key
The optional Audi advanced key is available for the first time on an A3 model with the introduction of the 2015 A3 sedan.
If Advanced key has been installed in the vehicle, it has the following additional control modules:
• Access/Start Authorization Control Module J518
and
• Electronic Steering Column Lock Control Module J764

Terminal 30

Terminal 58xt

Gear selector
lever position "P"

Terminal 30

Vehicle Electrical System
Control Module J519

Internal antenna for central
central locking system

Terminal 50
request

NO contact

Convenience
CAN bus

"Terminal 15" - signal 2

Electronic Steering Column
Lock Control Module J764
"Terminal 15" - signal 1

"Wake up" line

Access/Start Authorization
Control Module J518

Engine Control
Module J623
611_015

Key:
E408

Access/Start Authorization Button

G415

Driver Exterior Door Handle Touch Sensor

G416

Passenger Exterior Door Handle Touch Sensor

R134

Driver Access/Start System Antenna

R135

Front Passenger Access/Start System Antenna

R136

Access/Start System Antenna in Rear Bumper

R137

Access/Start System Antenna in Luggage Compartment

R138

Access/Start System Antenna 1 in Vehicle Interior

22

Access/Start Authorization antennas
All five Access/Start System antennas are activated by Vehicle Electrical System Control Module J519.
They are installed in the following positions:

611_016

Driver Access/Start System Antenna R134. On body under ‘B’ pillar area.

611_019

Access/Start Antenna in Luggage Compartment R137. Located under seat.

611_017

Front Passenger Access/Start Antenna R135. On body under ‘B’ pillar
area.

611_018

Access/Start System Antenna in Rear Bumper R136.

23

611_020

Access/Start System Antenna 1 in Interior R138.

Unlocking/locking a vehicle with Audi advanced key
Access/Start Control Module J518 monitors Driver Exterior
Door Handle Touch Sensors G415 and G416. Unlocking and
locking input can be sent to the Advance key system via
these sensors. The sensors are located in the driver and
front passenger door handles. No door handle sensors are
installed on the rear doors.

After the system has detected an unlocking or locking
input, a scan of the ignition key is initiated. The system
activates the five antennas and receives a reply form the
vehicle key via the central locking antenna. The system uses
this reply to check whether the key is authorized and within
the radius of the operating point.

To unlock the vehicle, the driver or passenger must grip the
respective door handle. To lock the vehicle, contact must
be made with the marked surface (framed rectangle) on the
door handle.

If all the conditions are met, Vehicle Electrical System
Control Module J519 initiates the corresponding operation.
J519 transfers the unlock or lock commands to the
Convenience CAN bus. The commands are received by door
control modules and subsequently unlock or lock the doors.

Switching the ignition on
To switch the ignition on, Access/Start Authorization
Button E408 must be pressed.
If all the condition for switching on the ignition are met,
the system first unlocks the steering column. After the
column is unlocked, Terminal 15 Power Supply Relay J329
is activated and the ignition is switched on.

If the conditions for starting the engine have been met
during this process, Engine Control Module J623 activates
both starter relays. The starter is energized, the fuel injection cycle begins and the engine starts.

24

Terminal management
Terminal management without Audi advanced key
Terminal management functionality depends on whether
the 2015 A3 is equipped with the optional Advanced key
system or not.

On models with Advanced key, this task is performed by
Steering Column Electronics Control Module J764.

On models without the Advanced key system, Steering
Column Electronics Control Module J527 is the terminal
management master.

Terminal management without Audi advanced key

Ignition starter
switch

Ignition key
removal lock

Steering column switch module

Gear
selector position "P"

Terminal 30

Convenience CAN bus

Steering Column
Electronics Control
Module J527

Terminal 15 request 1
Terminal 15 request 2
NO contact

Vehicle
Electrical
System
Control
Module
J519

Terminal 50 request

Terminal 30

Powertrain CAN bus

Terminal 15

Terminal 15

Terminal 50 diagnostics

Terminal 50

Engine Control
Module J623

611_022

Key:
J329

Terminal 15 Power Supply Relay

J906

Starter relay 1

J907

Starter relay 2

25

Steering column switch module

Terminal 15

The ignition key removal lock, ignition switch and Steering
Column Electronics Control Module J527 are all components of the steering column switch module. J527 monitors the ignition switch continuously and activates the
ignition key removal lock as required.

The task of Steering Column Electronics Control Module
J527 (terminal management master) is to determine the
status of terminal 15. To do this it monitors the status of
the NO contact and both ‘terminal 15 request’ sensors.
However, it is the task of Vehicle Electrical System Control
Module J519 to activate the terminal 15 voltage supply
relay. To do this, J519 monitors the following three signals:

Generating the individual terminal
status signals
To generate the various terminal status signals, J527 continuously monitors the sensors in the ignition switch. The
switch has four sensors:
•
•
•
•

NO contact sensor
Terminal 15 request sensor 1
Terminal 15 request sensor 2
Terminal 50 request sensor

J527 continuously generates the current status signals for
terminals 15, 50 and 75 on the NO contact based on the
input from the sensors. The current terminal status is
transmitted to other control modules through the Convenience CAN bus.

• Terminal 15 request 1
• Terminal 15 request 2
• NO contact
The information is transferred by J527 and reflects the
status of the three sensors in the ignition switch. If voltage
is measured in two of the three signals wires from Vehicle
Electrical System Control Module J519, Terminal 15 Relay
J329 is activated and the ignition is switched on. With this
configuration, it is still possible to start the vehicle even if a
fault occurs in one of the three sensors in the ignition
switch.

Terminal 50
The Engine Control Module receives the requests to start
the engine from J527. This request is sent both by discrete
wires and via the CAN bus. The Engine Control Module
activates both starter relays J906 and J907.

NO contact
The NO contact is activated by inserting the vehicle key into
the ignition switch. When this is detected, J527 transfers
the information ‘NO contact on’ to the CAN bus and to
Vehicle Electrical System Control Module J519 by a discreet
wire. There is no ‘NO contact’ wire for supplying consumers.

To this end, the ECM closes internal switches and connects