Mercedes W204 Door Lock Actuator

On the front door the outer handle also has to be removed and the torx holding the lock in place cannot be accessed until the door is open.

Mercedes w204 door lock actuator.

Large image extra large image. Due to their frequent use the springs in the door lock actuator mechanism wear out over time. My 300sd has single vacuum port on door lock actuator the 80 and 81 300d have dual port actuator. Admiral is right that it is a door actuator.

Even with the door card removed the lock mechanism cannot be accessed without also drilling out it s riveted all round and removing an all over aluminium inner panel and this would be difficult with. Mercedes benz w124 e class technical articles front door latch and vacuum actuator replacement pelican technical article. This article applies to the mercedes benz c class w204 2007 2014. I plugged mine with golf tees while testing.

Take the door panels off unplug vacuum line from actuator you can do it without unbolting anything except the door panel. Green arrow the latch pull and element joiner red arrow the door latch lock yellow arrow and the vacuum element blue arrow.