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:
Antenna Amplifier, Removing and Installing
Antenna Amplifier -R24-, Removing and Installing, Sedan
The Antenna Amplifier -R24- is located on the upper right of
the D-pillar.
Removing
- Turn off the ignition and all electrical equipment and
remove the ignition key.
- Remove the D-pillar trim panel. Refer to
→ Body Interior;
Mechanically unlocking the luggage compartment lid
Applies to: vehicles with folding backrests
Fig. 34 Inner luggage compartment lid: access for emergency
release (1) sedan, (2) allroad
Applies to: vehicles with fixed backrests
Fig. 35 Rear bench seat: release cable for emergency release
in the sedan
Depending on the equipment, the luggage compa
