They found that there was a loose wire inside my door.
Mercedes lock door with engine running.
Reach inside and hit the power lock switch and lock the doors.
There is a couple of ways to fix this problem.
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.
Open the door and exit the car.
Drivers can lock and unlock the car just by touching the door handles.
Roll down the drivers side window.
Lock mercedes benz while engine running.
If you turn the key from man position back to auto you must reset the sliding door.
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.
Pull your arm out of the car before it gets pinched by the closing window.
Lift up on the auto up driver window switch.
On those models the door lock actuators may fail causing the door lock to bounce up and down several times.
Original poster 1 point 3 years ago.
Then briefly press one of the buttons to completely open and close the door once.
Posted by 3 years ago.
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.
Only way i know how.