They found that there was a loose wire inside my door.
Mercedes lock door with engine running.
Posted by 3 years ago.
To do this fully close the sliding door once with the button on the centre console or in the doorway pressed down.
Open the door and exit the car.
Then briefly press one of the buttons to completely open and close the door once.
Pull your arm out of the car before it gets pinched by the closing window.
There is a couple of ways to fix this problem.
Lock works perfectly now.
Only way i know how.
Lock mercedes benz while engine running.
Original poster 1 point 3 years ago.
Unfortunately i had some problems with the mercedes a glow plug went out and i decided to have all six replaced at the same time and after 6 years the vehicle battery failed and i had them replace the rv batteries at the same time.
Ive done it by starting the car open drivers door hit lock button on door then use metal key inside fob to manually lock the driver door.
If you turn the key from man position back to auto you must reset the sliding door.
On those models the door lock actuators may fail causing the door lock to bounce up and down several times.
Drivers can lock and unlock the car just by touching the door handles.
Lift up on the auto up driver window switch.
Reach inside and hit the power lock switch and lock the doors.