Audi A4: Electrical System
Audi A4 (B9) 2016-2026 Service Manual / Electrical System
- Communication
- Infotainment System
- Sound System
- Antenna Systems
- Telephone System
- Navigation System
- Rearview Camera System
- Multifunction Steering Wheel
- Connection for External Multimedia Devices
- Rear Seat Entertainment System (RSE)
- Peripheral Camera
- Mobile Online Services
- Electrical Equipment General Information
- Battery, Starter, Generator, Cruise Control
- Windshield Wiper/Washer System
- Exterior Lights, Switches
- Interior Lights, Switches
- Wiring
- Radio Installation Instructions
READ NEXT:
Overview - Infotainment System
Overview - Infotainment System, MMI Radio Plus, 18E
Information Electronics Control Module 1 -J794- with
integrated CD player/SD card reader in the glove compartment
Multimedia System Control Head
SEE MORE:
Battery Charger -VAS5903- Support Mode
General Information
The support mode provides the vehicle electrical system with
voltage when the Battery -A- is removed or disconnected.
For more information. Refer to the Battery Charger -VAS5903-
Operating Instructions.
The support mode is used for the following situations:
Vehicle electrical
Rear Bumper Cover, Removing and Installing
Special tools and workshop equipment
required
Body Socket -T40078-
Depending on the equipment version, the following additional work must be
performed.
Removing
- Remove the bolts -1-.
- Push the wheel housing liner -3- to
the side.
- Remove the bolt -2-.
- Remove the nut
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