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 -VAS5900- Service Charge
WARNING
Risk of injury. Follow all warning messages and
safety precautions. Refer to
→ Chapter "Warnings and Safety Precautions".
Caution
"Service charging" is not permitted for VW vehicles,
because voltage surges can damage the on-board
electronics.
The Battery -A- must
A/C System, Operating after Charging
Note
If the mechanically driven Air Conditioning (A/C) compressor
was removed, rotate it approximately 10 times by hand before
using it for the first time (during or after installing, for
example before installing the belt) to prevent damage caused by
liquid impact when first switched
© 2019-2026 Copyright www.audia4b9.com
