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Transmission Issues

Model: Audi A8 - Years 2002-2009
Part: Drivetrain

This video illustrates some problems related to the transmission of an Audi A8. It also shows diagnostics for the faults found in the vehicle. First, check the transmission control unit (TCU) located at the top left of the hood; once confirmed that there are no issues, proceed to the gear shifter. In this case, none of the gears work except for second gear, so all warning lights are on. The last images show that by loosening the upper line of the transmission oil cooler, it is possible to check the pressure.

Updated on 5 February 2026 by ScegliAuto

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