E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

Mechanical key doesn't lock trunk

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Old Aug 28, 2013 | 11:10 AM
  #1  
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2000 E320W 4Matic
Mechanical key doesn't lock trunk

I have only one key for my 2000 E320 (others on order), but my mechanical key doesn't double-lock the trunk. It works in the door and glove compartment, but doesn't turn the cylinder in the trunk, at all. Anyone had this experience?
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Old Aug 28, 2013 | 12:34 PM
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2000 E320W 4Matic
Yes, the key fob works fine.

I'll give the WD40 a shot, but it doesn't feel stuck - it doesn't feel like it's even trying to move.
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Old Sep 1, 2013 | 07:50 PM
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2000 E320W 4Matic
No love with the WD-40. Anyone else have an explanation?

I'm starting to wonder if the trunk is keyed differently from the rest of the car for some reason...
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Old Sep 2, 2013 | 04:29 PM
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2000 E320W 4Matic
I've never had any trouble opening it with the fob (though the console button seems finicky). I hadn't even thought to try the key until recently when I was valet parking, and wanted to double-lock the trunk, but was unable to do so.
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Old Sep 3, 2013 | 07:43 AM
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2000 E320W 4Matic
I don't have my manual in front of me. I'm talking about the manual locking (I think it's a turn to the right) that keeps the electronic key from being able to open the trunk.
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Old Apr 18, 2016 | 09:30 PM
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2002 E430 4matic (W210)
I'm having the exact same issue. Can't rotate cylinder with the mech. Key. This car has had a past insurance claim, I gotta wonder if a trunk lid was swapped used in its entirety with no consideration for a mech. Key.
Which now begs the question, can a replacement be had that is keyed properly?, or will an entire lock set have to be purchased?
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Old Apr 18, 2016 | 11:38 PM
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2002 E430 4matic (W210)
Never mind got it moving
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Old Apr 19, 2016 | 12:23 AM
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99 E320
it's not easy to turn given the lack of leverage with the skinny metal footprint
of the key. it may require a little help (not too much) with pliers. DONT
OVERMUSCLE it if you do use a tool
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