How long do you wait until after engine start before powering stuff up do you run the heated seats and airscarf or use the front screen defrost at the same time?
Could be an undervoltage in the system the screen is a low priority and is shut off but it should automatically fire up again once there is enough charge.
Do you hear the relay click when you press the switch?
__________________ One thing you will learn with German cars - If it's simple it ain't happening. |