E-Class (W211) 2003-2009

trunk no longer opening (using key or inside switch)

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Old Feb 6, 2021 | 10:33 AM
  #1  
topgun129's Avatar
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06 C350 4Matic
trunk no longer opening (using key or inside switch)

hi, all of a sudden my trunk is no longer opening with the key or inside switch. also i'm getting a license plate lights and 3rd brake light not working sign on my main dash.

any clues as to what this might be? the car unlocks and locks fine and drives without issues.

thanks!
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Old Feb 6, 2021 | 12:08 PM
  #2  
CastorTroy's Avatar
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2014 E550
the ground wire in the wiring harness is cut along the hinge on the driver's side. use the key to open the trunk manually, take the driver's side trunk apart and it will be very obvious
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Old Feb 6, 2021 | 12:09 PM
  #3  
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2014 E550
couple examples



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Old Feb 17, 2021 | 12:11 AM
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BenzVince's Avatar
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From: Albuquerque, NM
09' E350, 01' Maxima SE, 93 Nissan Maxima SE, 1987 Nissan Maxima SE
I had that happened along with the brake light nonoperative. I did find two wires are severed what a disappointment how thin and stiff those wires MB are using. no flex or give so I had to repair it and put some kind of connector between them to give some slack.
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Old Feb 20, 2021 | 06:27 PM
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06 C350 4Matic
thanks for all the help. the brown wire was the culprit. one thing to note is that to open the trunk before you begin any work, insert the valet key into the key hole, turn it left and then pull the latch. if the key doesn't turn then spray some wd-40 or pb catalyst to loosen the inside parts.
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Old Feb 26, 2021 | 05:57 PM
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2007 E320 Bluetec
I had a problem like this except my car kept calling 911. Turns out MB does that when it thinks someone is trying to get out of the trunk while you’re driving. The non-automatic handle wasn’t fully releasing. Causing the auto not to work, causing me to use the handle
more. Causing MB to think someone was locked in my trunk while driving.
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