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
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Pressure Gauge, Tests and Measurements
General Information
Indicators on pressure gauge
1 - Temperature scale for refrigerant R134a CF3-CH2F or
CH2F-CF3.
2 - Pressure scale
Note
Pressure is measured in different units: 1 MPa (145 psi)
corresponds to 10 bar (145 psi) positive pressure. 1 bar (14.5
psi) abso
Changing a tire
Preparation
You must complete the preparation before
changing a tire.
Read and follow the important safety precautions.
Set the parking brake.
Select the "P" selector lever position.
When towing a trailer: disconnect the trailer
from your vehicle.
Lay out the vehicle tool kit and the
spare t
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