central locking packed up

Ron Palfrey

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Your Mercedes
C280 Elegance 1994
I wonder, could it be the central locking vacuum pump? Or a hose come adrift from it?

I'm guessing, as my W202 saloon may be considerably different from yours, but the principle may be the same.
 

Cosworth

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Have you checked the petrol flap lock, its also vacuum operated. It has a similar mechanism as the doors.
 

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Does it work with engine running?? the vacum comes off the inlet manifold. if so its just a small leak. check all cells including petrol flap. thens its down to checking all the lines inc the vac tank. its alot easier with a vac pump with guage.
 

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no fuse, its operated from the engine vacume
 

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