Date registered: Dec 2005
Vehicle: 2005 C350, 2002 ML270CDI, 1969 230S, previously 2002 A160, 1985 380SEC ivory, 1983 380SEC grey
Location: Adelaide South Australia
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you might also like to fossick around and find and check the earthing connections. At various points on the car a whole lot of wires are collected onto a large bolt welded to the chassis. There is one in the engine compartment on the inside front mudguard, and another in the boot (trunk?), and probably others....
I seem to remember reading years ago that people were having problems with their W202s - petrol lid and boot opening erratically, etc, which was tracked down to earthing.
regards from Australia