There is a couple of ways to fix this problem.
Mercedes a class rear door wont lock.
So my question is this.
Open and close lock to.
I have seen a couple of used door lock actuators on ebay for under 60 for my car.
This issue is a failure of the internal door lock actuator which is failed in the lock position which is causing the door not to open.
I have mercedes benz c class estate 2009 model that has developed a door locking issue.
Question rear door wont open on my 2009 200 c class jq.
I have just acquired a 2008 w204 c320 cdi sport saloon and have also just found out that the rear left door lock does not go up or down and its stuck in the unlock position hence doesn t lock when the lock button is pressed.
Apply wd 40 or equivalent product directly into the lock.
It seems to only play up once a month or so but now the front.
This is a costly component to replace at the repair shop but it is something you can do at home.
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.
It does not work with either the central locking or auto lock on movement of the vehicle.
I took it to a mercedes benz specialist and they said it could be a door actuator.
Find the answer to this and other mercedes questions on justanswer.
I have been quoted 1000 at the mercedes main dealer so wanted to know if anyone had any advice on what it could be before i commit to spending that much.
Earlier this year the driver s door would occasionally not open unless i pressed the key fob repeatedly.
Perhaps your mercedes locks work but they open and close slowly.
On those models the door lock actuators may fail causing the door lock to bounce up and down several times.
You likely have a shorted door lock actuator which you can replace with a new unit for the lock that is not working.
Our local mechanic couldn t identify a problem.
Now the rear door on the same side has the same problem.
It has to be manually locked and released.