Audi A4: Battery, Starter, Generator, Cruise Control
Audi A4 (B9) 2016-2025 Service Manual / Electrical System / Electrical Equipment General Information / Battery, Starter, Generator, Cruise Control
- Battery
- Test Sequence
- Visual Inspection
- Battery Tester -VAS6161-
- Battery Tester with Printer -VAS5097A-
- Current Draw Test
- Battery Charger -VAS5095A-
- Battery Charger -VAS5900-
- Battery Charger -VAS5900- Service Charge
- Battery Charger -VAS5900- Support Mode
- Battery Charger -VAS5903-
- Refresh Charging with Battery Charger -VAS5903-
- Battery Charger -VAS5903- Support Mode
- Battery Charger -VAS5906-
- Solar Battery Maintainer -VAS6102A-
- Generator
- Voltage Regulator, Bosch Generator from 2001, Removing and Installing
- Voltage Regulator, Valeo Generator from 2001, Removing and Installing
- Ribbed Belt Pulley without Freewheel, Removing and Installing
- Special Tools
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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
Visual Inspection
WARNING
Risk of injury. Follow all warning messages and
safety precautions. Refer to
→ Chapter "Warnings and Safety Precautions".
Before any extensive measurements are taken, visuall
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Electronic Stabilization
Control
Description
Electronic Stabilization Control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critical situations,
such as if the vehicle is oversteering or
understeering, or if the wheels are spinning.
The brakes are applied or the motor t
Transmission, Disassembling and Assembling
WARNING
The system is under pressure.
The electronic ATF pump must be deactivated every
time before opening the transmission, and the hydraulic
pressure reservoir is drained.
Refer to
→ Chapter "ATF Pump, Deactivating and Draining the
Hydraulic Pump Reservoir".
FWD Vehicles
S
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