Open the door and exit the car.
Mercedes lock door with engine running.
Reach inside and hit the power lock switch and lock the doors.
Then briefly press one of the buttons to completely open and close the door once.
Drivers can lock and unlock the car just by touching the door handles.
The engine might not be running when the car is first parked but will come on later as the car s batteries run down.
There is a couple of ways to fix this problem.
They found that there was a loose wire inside my door.
Lift up on the auto up driver window switch.
Lock mercedes benz while engine running.
Pull your arm out of the car before it gets pinched by the closing window.
Original poster 1 point 3 years ago.
If you turn the key from man position back to auto you must reset the sliding door.
Posted by 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.
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.
Only way i know how.
On those models the door lock actuators may fail causing the door lock to bounce up and down several times.
Lock works perfectly now.