Audi A4 Owners & Service Manuals

Audi A4: Electrical Equipment General Information

Audi A4 (B9) 2016-2026 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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 Power Sunroof Control Module -J245-, Removing and Installing

Removing - Switch off the ignition. - Remove the left and right sun visors. Refer to → Body Interior; Rep. Gr.68; Equipment; Sun Visor, Removing and Installing. - Remove the center support for the sun visor. Refer to → Body Interior; Rep. Gr.68; Vehi

 Trailer

Driving with a trailer General information Your vehicle is primarily intended for transporting people and luggage. However, if you drive with a trailer, follow the technical requirements, the operation and driving tips, and the legal regulations. Driving with a trailer affects the vehicle's energy

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