You likely have a shorted door lock actuator which you can replace with a new unit for the lock that is not working.
1997 mercedes power lock and fuel door not working.
Symptoms of vacuum door lock failure.
Perhaps your mercedes locks work but they open and close slowly.
I tried the various methods shown on youtube but none of them worked.
If the door lock actuators fail they will disable the power door lock feature from working.
I had to.
Apply wd 40 or equivalent product directly into the lock.
If a door unlocks but will not lock again then replace the door switch.
This will require the driver to use the key to lock or unlock the doors and can disable the power door.
In other words it s rare that all of the doors in your car will be unable to lock but it s typical for one door at a time to begin experiencing problems.
Mercedes benz s320 closing assist door lock issues due to pneumatic system problems 86 reports.
My lr door would not unlock from inside the car or outside.
Power door locks are wonderfully convenient as long as they work properly.
If your locks aren t working on your mercedes it can be extremely.
If you do understand the system however troubleshooting can be performed quickly.
I can hear the pump go on and off as i press the key but does not do anything.
Open and close lock to.
Mercedes benz s320 door closing assist and locks not working.
The truck will not open with they key either.
Learn about this problem why it occurs and how to fix it.
The same problem occurs when locking the car.
I have a 2000 slk 230.
Power door locks do not function.
Usually when vacuum door locks begin to fail they fail systematically.
This page is dedicated to mercedes s class door lock pump repairin my life i owned and worked on many w140 s class cars all of them had problems with door lock pump aka pse pump.
I replace the 20 amp fuse in the f62 space from under the rear passenger back seat behind the light.
I could not remove the door panel with the door closed.
When pump fails doors do not lock or unlock with key or key fob fuel filler cap doesn t lock or unlock trunk lid does not soft close trunk handle doesn t come out or gets stuck extended lumbar support in both.
Additionally if you.
The central locking system does not work from the smartkey nor from the interior buttons.
The door locks actuate as soon as i press the key fob but both the fuel filler lock and the glove box lock only actuate after a delay of several seconds.
Occasionally they don t actuate and the system times out.
When they do not work right trying to pinpoint the problem can be frustrating if you are not educated on how the power lock system works.