Audi A4: Overview - Rearview Camera System
The rear view camera system (KA2) assists the driver during
back-up driving for diagonal and parallel parking for trailer
towing and watching cross traffic by providing the driver with
an image of the traffic situation behind the vehicle via the
Front Information Display Control Head -J685-.
The rear view camera system is switched on when engaging the
reverse gear. The system can be activated manually by pressing
the Parking Aid Button -E266- in the instrument panel
(optional).
The rear view camera system consists of the following
components:
- Rearview Camera -R189-
- The Rearview Camera System Control Module -J772- is
integrated in the Rearview Camera -R189-
- Information Electronics Control Module 1 -J794-
- Front Information Display Control Head -J685-
Other control modules may be installed as optional
equipment.
It is not permitted to install an auxiliary license plate
for vehicles with rear view camera system as it could impair the
function of the rear view camera system.
Fault finding is performed via "Guided Fault Finding" using
the Vehicle Diagnostic Tester.
Component Location Overview - Rearview Camera System

1 - Front Information Display Control Head -J685-
- Connector assignment. Refer to
→ Wiring diagrams, Troubleshooting & Component locations.
- Removing and installing. Refer to
→ Chapter "Infotainment System Display, Removing and Installing".
2 - Rearview Camera -R189-
- With Rearview Camera System Control Module -J772-
- Connector assignment. Refer to
→ Wiring diagrams, Troubleshooting & Component locations.
- Removing and installing. Refer to
→ Chapter "Rearview Camera -R189-, Removing and Installing".
3 - Information Electronics Control Module 1 -J794-
- Connector assignment. Refer to
→ Wiring diagrams, Troubleshooting & Component locations.
- Removing and installing. Refer to
→ Chapter "Information Electronics Control Module 1 -J794-, Removing and
Installing".
READ NEXT:
Rearview Camera -R189-, Removing and Installing, Sedan
The Rearview Camera -R189- is inside the rear lid handle
button. It permanently attached to the handle button.
If the Rearview Camera -R189- mus
Calibration Unit -VAS6350A-, Installing and Aligning
After performing repair work on the vehicle, it may be
necessary to re-calibrate the rearview camera system. In detail,
this is the case after:
SEE MORE:
Caution
This procedure contains mandatory replaceable parts.
Refer to component overview and parts catalog prior to
starting procedure.
Mandatory Replacement Parts
Nut - Rear Thorax Airbag to Side Cushion
Removing
WARNING
Risk of injury due to involuntary deployment.
Pay att
Safety Precautions
Safety Precautions when Working on Vehicles with Start/Stop System
There is a risk of injury due to the engine starting
unexpectedly.
The engine can start unexpectedly on vehicles with an
activated Start/Stop System. A message in the instrument cluster
indicates whether the Sta