Audi A4: Electrical Equipment General Information
Audi A4 (B9) 2016-2026 Service Manual / Electrical System / Electrical Equipment General Information
- Battery, Starter, Generator, Cruise Control
- Windshield Wiper/Washer System
- Exterior Lights, Switches
- Interior Lights, Switches
- Wiring
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Battery
Battery General Information
To guarantee a long service life, the Battery -A- must be
checked, serviced and maintained as described in this manual.
The Battery -A- supplies the power to start the eng
Test Sequence
Battery, Checking, Vehicles with Battery Monitoring Control Module J367
or Energy Management Control Module J644 and Data Bus On Board Diagnostic
Interface J533
In certain model series the followi
SEE MORE:
Release Cable, Removing and Installing
Latch Release Cable, Removing and Installing
Removing
- Remove the vehicle electrical system control module bracket.
Refer to
→ Electrical Equipment; Rep. Gr.97; Relay Panels, Fuse Panels,
E-boxes; Component Location Overview - Relay Panels, Fuse
Panels, E-boxes.
- Loo
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
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