doors locks & trunk lock not working
It should lock when you lock your doors.
Check fuses
door mech fix c180
Lock on driver frot side is not working
Remove the drivers side door panel of your Mercedes-Benz. Remove the door lock assembly retaining bolts. Remove the door lock linkage. The door lock assembly will come off.
http://www.peachparts.com/shopforum/diesel-discussion/215532-vacuum-door-locks-not-working-1983-300d.html
The fuel tank lock is tied into the vacuum door lock system. When the doors are unlocked then so should the trunk and gas cap. The door lock can be released from inside the trunk.
you use the key in the door lock.
To fix a sliding door lock that is not working properly, you can try cleaning the lock mechanism with a lubricant, adjusting the strike plate, tightening any loose screws, or replacing the lock if necessary.
Replacing door actuator on ml500. How do I remove the outside door handle?
To replace the door lock mechanism on a Mercedes C180, first, remove the door panel by unscrewing any screws and carefully prying it away from the door. Disconnect the wiring harness and remove the old lock mechanism by unscrewing it from its mount. Install the new lock mechanism, reconnect the wiring, and reattach the door panel, ensuring everything is securely fastened. Finally, test the lock to ensure it operates correctly before finishing up.
To fix a door lock that is not working properly, you can try lubricating the lock mechanism with graphite powder or WD-40, adjusting the strike plate alignment, tightening loose screws, or replacing the lock if necessary.