Place the lock and actuator assembly with the cables attached back into the door.
Repair door lock 2001 mb320.
The door lock relay in your mercedes benz ml320 is a piece of hardware that sends the signals the actuators.
When the wiring of the doors relay isnt properly connected or is shorting it wont send the proper information to the actuator.
Manually unlock all the doors.
There is a couple of ways to fix this problem.
How to replace the window regulator on ml class 1998 2005 w163 video.
My 2001 ml320 rear door does not lock or unlock my 2001 ml320 rear door does not lockk or unlock with remote.
Pop off interior door panel apx 10 plastic fasteners 3.
Remove door light electrical connect at bottom of door.
If this happens you will notice that the locks either dont work or only work part of the time.
Clean and reconnect the actuator.
First you can replace the door lock actuator which can cost from 150 to 450 depending on if you try to fix it yourself or have the dealer fix the problem.
Remove 3 phillips screws 2 door grip handle and 1 behind srs tag popping off door grip trip and srs tag 2.
You can get the door lock actuator for a fraction of the dealer prices from amazon see here.
Ml 320 door lock actuator dla rear left door order part vin range specific 200 online removal 1.
I have mercedes benz 2002 c class question.
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On those models the door lock actuators may fail causing the door lock to bounce up and down several times.
1 determine which door has the broken actuator.
Install the white plastic cover back onto the lock and actuator assembly by securing it with the two other screws you removed previously.
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Replace the door lock actuator door locks will functioned normally again.
How to remove and replace door actuator mercedes w163 ml230 ml270 ml320 ml350 ml400 ml430 ml500 our website for tools parts and more videos.