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  #1  
Old 08-13-2007, 02:23 PM
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Join Date: Jul 2007
Posts: 21
W124 help. 1989 300E. Doors will not lock.

So, this is what happened. I stopped at a store to get something. Locked my car the way I always do (from the trunk). So, when I come back out to go and unlock my doors, the doors wouldn't unlock.

So, I went back to retrieve it this morning, using the coat hanger method. Now the problem is, the doors wouldn't lock at all. The locking mechanism from the trunk is fucntional (I can see it moving), but it doesn't lock the doors. I can't lock them from the drivers of passenger side either 'cause both keyholes never worked to begin with.

So, what could the problem be? I know I had problems locking the door with a dead battery before, but the battery I have is practically new.

Does anyone know what the problem mind be?

Thanks in advance.

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  #2  
Old 08-13-2007, 05:26 PM
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Any help?
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  #3  
Old 08-14-2007, 06:03 AM
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Location: Southeastern PA
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Check that the vacuum pump under the right side of the rear seat is working.
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  #4  
Old 08-15-2007, 04:12 AM
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How do I go about checking that?
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  #5  
Old 04-01-2009, 09:19 PM
1988 300E
 
Join Date: Mar 2009
Location: Vancouver Island, BC
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I`d like to know too. I have the same problem. mine used to work but no more. I still can unlock by the driver side but not by the passenger side...
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  #6  
Old 04-01-2009, 09:29 PM
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Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,765
(From memory):

The front door handles can be removed without disturbing the inner door panel. The central locking switch is attached.

There is a plastic plug in the doorjamb, a little lower than the door handle, which is the electrical connector to the central locking switch in the lock. Pull that out to test.

To remove the handle (and thus the switch), remove the plastic plug in the doorjamb directly in line with the handle, back the allen set-screw inside out. Slide the lock assembly toward the doorjamb and the pull it straight out of the door.
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  #7  
Old 04-01-2009, 09:38 PM
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Join Date: Oct 2008
Posts: 557
hmm...the only guess I have is put the key in and turn it the same way that you always have and hold it that way for a few seconds longer...may give the door servors more time.....to gain power or whatever...just a thought....good luck

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