After reading this thread i decided to swap out the plunger courtesy switch on the driver s side.
Mb front door handle light always on after door closed.
The overhead light and the door ajar light would flicker when i closed the driver s door but remain on.
If a door unlocks but will not lock again then replace the door switch.
Open and close lock to recalibrate.
Apply wd 40 or equivalent product directly into the lock.
The door locks on the driver s door or the rear right door occasionally do not lock unlock when called for either by keyless go touching the outside inside of the exterior door handle or the central lock buttons on the front doors.
The sensor typically uses a switch with a spring loaded plunger that is compressed when the door is closed and is released when the door is open.
Source istock when it comes to taking extra hygiene precautions you can never be too safe.
How to fix a door that will not lock.
This action opens and closes an electrical circuit sending a signal to your vehicle s computer activating the door ajar warning light when the door is open.
It caused ice between the door seal and the door to melt and subsequently refreeze once the car went outside essentially freezing the door closed.
I had the same issue with my 2002 tundra.
It turns out that i had a very easy one this time.
Perhaps your mercedes locks work but they open and close slowly.
Parked it on friday went out to find the door ajar light on saturday morning.
Door locking problems almost always originate in the door latch not the locking mechanism.
The striker fails to penetrate into the door jamb because the door.
I heated the shop to perform a 20k maintenance on the car which thawed the car out for the first time in a couple months.