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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 Fiber-Optic Cables, Repairing

  Caution Do not bend the fiber-optic cable too much. The bending radius must be no less than 25 mm. Fiber optic cables must not be routed over sharp edges. The fiber-optic cable must not be dirty or touched with bare fingers. Fiber optic cables may not be heated. It is not permitted to tw

 General Information - Multifunction Steering Wheel

The button is integrated in the steering wheel for easier operation of infotainment, telephone and the navigation system. On Tiptronic, rocker switches are also installed on the left and right. The Multifunction Steering Wheel Control Module -J453- (in the right button) reads out the information

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