Having some problems with operation of the trunk lock and have a couple of questions. There is a black electrical device fastened into the lock mechanism. Is it a micro switch or electrical solenoid? What does it do?
The vacuum rod will not move when the central locking system is locked and unlocked. There are no leaks as the vacuum pump shuts off as normal. The push button will no longer open the trunk when the car is unlocked. Will open with a cc turn and push in. Can the whole locking mechanical assembly be removed through the access port, I does not look large enough. What is the trick? There is always a trick, it's a Mercedes.
Thanks for your input.

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