On my 1985 300D, I understand that with the steering lock key removed and the driver's door open, a warning buzzer sounds if the head light is not switched off.
Recently I found that buzzer no longer sounds if I left the head light on and driver's door open.
I know the buzzer itself still works as the seat belt buzzer is functioning.
Anyone has any ideas what may be the problem?


David


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1985 300D