Mercedes Benz W124 Driver Door Wont Lock

Apply wd 40 or equivalent product directly into the lock.

Mercedes benz w124 driver door wont lock.

You likely have a shorted door lock actuator which you can replace with a new unit for the lock that is not working. When this plastic part fails you will not be able to lock or unlock the door with the key. Open and close lock to recalibrate. I replaced the vacuum element actuator which did not solve the problem.

If a door unlocks but will not lock again then replace the door switch. You likely have a shorted door lock actuator which you can replace with a new unit for the lock that is not working. Using the key in the driver door lock would lock all doors except for the driver door. Open and close lock to recalibrate.

Perhaps your mercedes locks work but they open and close slowly. Perhaps your mercedes locks work but they open and close slowly. I have a 1995 e300d w124 which had a similar problem to that of the original post. There is a part inside the latch that breaks.

Finally on some of the later 123 models they used a white plastic part inside to control the door lock function. Step by step tutorial w124 how to remove exterior front door handle on 1995 mercedes e320 e420 e500. Apply wd 40 or equivalent product directly into the lock. Secondly the latch mechanism can fail and the door will not stay shut.

If a door unlocks but will not lock again then replace the door switch.