Mercedes C Class Drivers Door Wont Lock

Our local mechanic couldn t identify a problem.

Mercedes c class drivers door wont lock.

To access the mechanical lock find the small slot located underneath the door handle. The end cap will release and expose the mechanical lock. The fob unlocks and opens the trunk but it just wouldn t lock the car. You likely have a shorted door lock actuator which you can replace with a new unit for the lock that is not working.

This is a costly component to replace at the repair shop but it is something you can do at home. Make sure that the end piece of the blade key is pointing away from the car door so that you do not scratch it. 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. It seems to only play up once a month or so but now the front.

Even though the fob unlock it if i manually lock the 4 doors. I took it to a mercedes benz specialist and they said it could be a door actuator. Mercedes benz vehicles such as e c s ml gl r class are designed to automatically lock the doors as soon as you start to drive. I have mercedes benz c class estate 2009 model that has developed a door locking issue.

Before now if i remove the silver key from the fob and i use it to unlock the car manually it begins to sound an alarm but now it doesn t sound that alarm anymore. On those models the door lock actuators may fail causing the door lock to bounce up and down several times. Apply wd 40 or equivalent product directly into the lock. If a door unlocks but will not lock again then replace the door switch.

There is a couple of ways to fix this problem. Open and close lock to. Then pull the blade key away from the door. Earlier this year the driver s door would occasionally not open unless i pressed the key fob repeatedly.