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W124 Rear Head Rests Won't Stay

I own a1993 300E-2.8 and recently the rear head rests just won't stay up. When the ignition is off, I am able to pull the head rests to stay up. Whenever I turn on the ignition key before cranking, the head rests will fall back automatically. With the ignition on, I can never make the head rests to stay up. They just keep falling back.

I have check the head rest switch at the control console and there is nothing wrong with it. Even with the switch pulled out, the above funny thing still happens. Anyone got any idea on which part has gone wrong?

Reply to
PinHooi Tee
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I am sorry, in fact the head rests retracted (fall back) only when the engine starts.

Reply to
PinHooi Tee

AFAIK, The headrest restraints are vacuum driven. Check the vacuum solenoid valve, it is probably stuck open. (Can't remember the location, must look at my car later)

Regards, WS

Reply to
ws

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