It is cause by the failure of a small sp.
Mercedes a class door lock bounce.
The way that this fix works is by creating resistance at the door lock pin.
This prevents the door lock pin from bouncing up and down when you lock the door or when the doors lock automatically.
After trying the spring pack and dismantling the lock and replacing small spring inside car lock would only lock or unlock and involved gringing my inner doo.
Watch for the hazard lights to flash three times.
Our local mechanic couldn t identify a problem.
Lock the doors and confirm that the horn does not sound.
I have mercedes benz c class estate 2009 model that has developed a door locking issue.
Earlier this year the driver s door would occasionally not open unless i pressed the key fob repeatedly.
Your door lock should not bounce up and down anymore.
It seems to only play up once a month or so but now the front.
Press and hold both the lock and unlock buttons on the remote for at least two seconds.
When both locking or unlocking using the remote fob the front door locks bounce up and down and either don t lock or don t unlock depending whether i m locking or unlocking.
Ensure the door pin can go up and down.
Take 1 inch of electrical tape and apply it around the door lock pin.
If you want to reactivate the beep feature.
I have seen plenty of people complaining of the same fault.
Sometimes the locks work fine others can take 5 or more attempts.
The front door locks on my c180 kompressor estate 52 plate 2003 model have an intermittant fault.
Bouncing door lock is a common failure on mercedes cars.
Mercedes benz c e clk w203 w209 w211.
Take your mercedes benz for a test drive.