Audi A4: Electrical Equipment General Information
Audi A4 (B9) 2016-2025 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:
Component Location Overview - Sound System
Component Location Overview - Sound System, Speaker, Sedan
1 - Left Front Treble Speaker -R20-/Right Front Treble Speaker -R22-,
8RM, 9VD
- Left Front Midrange Speaker 2 -R276-/Right Front Midrange Speaker 2
-R277-, 9VS
Removing and installing. Refer to
→ Cha
Battery Charger -VAS5903-
WARNING
Risk of injury. Follow all warning messages and
safety precautions. Refer to
→ Chapter "Warnings and Safety Precautions".
WARNING
Do not check or charge a Battery -A- when the visual
indicator has "no color or is
bright yellow". Jump starting must not be used!
Th
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