Mercedes W220 Door Lock Actuator Removal

Ml270cdi auto 2001 no codes read by garage before i believe machine gunning rear right door so garage replaced the lock now the locks close open close on key fob locking and take off this problem had occured previously but went away only returned when machine gunning started i had a problem years ago with rear tail door locking and being unable to open it that went away. How to replace door lock actuator if the door locks in your c class are bouncing up and down or are otherwise not functioning properly the system s actuator might be broken. This is a costly component to replace at the repair shop but it is something you can do at home.