Question

My door lock on my 1996 C220 quit working I can't unlock or lock the door. The key fob quit working (I changed the batteries) and it still doesn't work and I can't lock or unlock it manually. Is there a link out there to show me how to change the lock out or trouble shoot it? Thank you. 

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Answers

Fisi, November 18, 2020

You don't have access inside your car, right?? 

Try hitting the door with your hand , maybe the central will lock it. I have hade the same problem in my Passat B6,  for me it worked.  After I have opened the door, I have open the central and cleaned it and I have put oil  sot it will unlock easier. 
 

gary kamermans, November 19, 2020

Actually I do have access to the inside of my vehicle. The door is currently unlocked and will open. The door will not lock the lock knob will not go down or up. I can not use the key to lock the door and it will not lock or raise the lock knob. Thank you for the response.

Fisi, November 20, 2020

I understand. If it would be mine, I will remove the door panel , visually inspect and I would check cables in the door.