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Mercedes w204 door lock actuator.
This can result in the car s locks malfunctioning.
Mercedes benz w124 e class technical articles front door latch and vacuum actuator replacement pelican technical article.
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.
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.
Front door latch and vacuum actuator replacement.
Whereupon they either don t work at all or otherwise bounce up and down.
Take the door panels off unplug vacuum line from actuator you can do it without unbolting anything except the door panel.
My 300sd has single vacuum port on door lock actuator the 80 and 81 300d have dual port actuator.
I plugged mine with golf tees while testing.
Due to their frequent use the springs in the door lock actuator mechanism wear out over time.