Audi A4 Owners & Service Manuals

Audi A4: Electrical Equipment General Information

Audi A4 (B9) 2016-2025 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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 Airbag Crash Sensors

Component Location Overview - Airbag Crash Sensors   Note The Avant is shown. 1 - Passenger Side Front Airbag Crash Sensor -G284- Component location: on the right of the lock carrier Removing and installing. Refer to → Chapter "Driver Front Airbag Crash Sensor -G283-, Rem

 Refrigerant Circuit, Flushing

  Note In the case of vehicles on which the refrigerant lines have no threads for connection of Adapter Set -1785-. Use for example a flushing gun with rubber end piece or an adapter from the Refrigerant Circuits Adapter Set 1 -VAS6338/1- for blowing through the individual components. Wh

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