Hey all,
My central locking system works well after I replaced the pump, but now the fuel filler door will sometimes not unlock, especially in cold weather. Is it common for the actuator to freeze in cold weather? Also, if I unlock the car from the trunk, only the trunk unlocks and the factory alarm does not deactivate...what part should I replace for that? Thanks in advance.

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1985 190E 2.3-16 Euro