Audi A4 Owners & Service Manuals

Audi A4: Electrical Equipment General Information

Audi A4 (B9) 2016-2024 Service Manual / Electrical System / Electrical Equipment General Information

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 Battery, Starter, Generator, Cruise Control

 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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 A/C Compressor Regulator Valve -N280-, Removing and Installing

  Note Certain functions on the A/C Compressor Regulator Valve -N280- (for example, a stuck valve or a disruption in the coil) can lead to a complaint regarding the A/C compressor (A/C system doesn't cool, the evaporator ices over, etc.). If the cause is with the A/C Compressor Regulator

 New tires or wheels

Audi recommends having all work on tires or wheels performed by an authorized Audi dealer or authorized Audi Service Facility. These facilities have the proper knowledge and are equipped with the required tools and replacement parts. New tires do not yet have the optimal gripping properties. Dr

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