Audi A4: General Information - Multifunction Steering Wheel
The button is integrated in the steering wheel for easier operation of infotainment, telephone and the navigation system. On Tiptronic, rocker switches are also installed on the left and right.
The Multifunction Steering Wheel Control Module -J453- (in the right button) reads out the information and transfers them over the LIN Bus to the Steering Column Electronics Control Module -J527-. From the Steering Column Electronics Control Module -J527-, the information is transferred to the individual components via the CAN Bus (comfort) and the Data Bus On Board Diagnostic Interface -J533-.
Fault finding is performed using the "Guided Fault Finding" on the Vehicle Diagnostic Tester.
Overview - Multifunction Steering Wheel
Overview - Multifunction Steering Wheel, Steering Wheel with Round Airbag
1 - Tiptronic Downshift Button on Steering Wheel -E439-
- Removing and installing. Refer to → Chapter "Tiptronic Downshift and Upshift Button on Steering Wheel -E439-/-E438-, Removing and Installing".
2 - 3-Spoke Steering Wheel
3 - Tiptronic Upshift Button on Steering Wheel -E438-
- Removing and installing. Refer to → Chapter "Tiptronic Downshift and Upshift Button on Steering Wheel -E439-/-E438-, Removing and Installing".
4 - Bolt
- 1 Nm
5 - Decorative Trim
6 - Right Multifunction Buttons on Steering Wheel -E441-
- Removing and installing. Refer to → Chapter "Right and Left Multifunction Buttons on Steering Wheel -E441-/-E440-, Removing and Installing, Steering Wheel with Round Airbag".
7 - Left Multifunction Buttons on Steering Wheel -E440-
- Removing and installing. Refer to → Chapter "Right and Left Multifunction Buttons on Steering Wheel -E441-/-E440-, Removing and Installing, Steering Wheel with Round Airbag".
Overview - Multifunction Steering Wheel, Steering Wheel with Trapezoidal Airbag
1 - Tiptronic Downshift Button on Steering Wheel -E439-
- Removing and installing. Refer to → Chapter "Tiptronic Downshift and Upshift Button on Steering Wheel -E439-/-E438-, Removing and Installing".
2 - 3-Spoke Steering Wheel
3 - Tiptronic Upshift Button on Steering Wheel -E438-
- Removing and installing. Refer to → Chapter "Tiptronic Downshift and Upshift Button on Steering Wheel -E439-/-E438-, Removing and Installing".
4 - Bolt
- 1 Nm
5 - Right Multifunction Buttons on Steering Wheel -E441-
- Removing and installing. Refer to → Chapter "Right and Left Multifunction Buttons on Steering Wheel -E441-/-E440-, Removing and Installing, Steering Wheel with Trapezoidal Airbag".
6 - Left Multifunction Buttons on Steering Wheel -E440-
- Removing and installing. Refer to → Chapter "Right and Left Multifunction Buttons on Steering Wheel -E441-/-E440-, Removing and Installing, Steering Wheel with Trapezoidal Airbag".
READ NEXT:
Right and Left Multifunction Buttons on Steering Wheel -E441-/-E440-,
Removing and Installing
Right and Left Multifunction Buttons on Steering Wheel -E441-/-E440-,
Removing and Installing, Steering Wheel with Round Airbag
Special tools and workshop equipment required
Trim Removal Wedge -340
Connection for External Multimedia Devices
Overview - Connection for External Multimedia Devices
There are several External Audio Source Connection -R199-
versions:
USB Charging - AUX IN, UE4
AMI (Audi music interface) - USB connection (qu
Rear Seat Entertainment System (RSE)
Overview - Rear Seat Entertainment System
The Rear Seat Entertainment System (RSE, 9WF) consists of:
Left Rear Information Display Control Head Control Module
-J648-/Right Rear Information Display
SEE MORE:
Exterior lighting
Switching the lights on and off
Fig. 42 Instrument panel: light switch with button
Light switch
Turn the light switch (1) to the corresponding position
when the ignition is switched on. The
symbol and the selected position will turn on (except
position 0).
O - The daytime running lights* will
Additional Safety Precautions for Airbag Control Module
WARNING
After every removal and installation of the Airbag
Control Module -J234-, the "inertial sensor basic
setting" must be performed.
If the Airbag Control Module -J234- is replaced with a
new part, the basic setting is performed when
implementing the "15 - Replace airbag control
