trunk lid won't lock shut - Mercedes-Benz Forum
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#1 (permalink) Old 08-09-2008, 06:54 AM
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trunk lid won't lock shut

the little motor that pulls lid closed another half inch after it;s down went out , don't know if it;s a fuse , a reset or the mechanism is just burnt. any advice ?
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#2 (permalink) Old 08-09-2008, 12:38 PM
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Are all other pneumatic devices (door looks, door closers, etc.) working okay or is it just the trunk closer? If others aren't working, then it's probably a bad air pump. But if it's just the trunk, then the dealer may need to tweak the mechanism and check to make sure it is clean and functioning. Make sure there is nothing blocking the trunk lid from closing.

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#3 (permalink) Old 08-09-2008, 01:16 PM
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Ditto to Jayhawk. It's called the PSE, and it is a pneumatic system. There is a module and a pump but I don't know what else. There is no little individual motor running the trunk close assist function.

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Last edited by Musikmann; 08-09-2008 at 01:21 PM.
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#4 (permalink) Old 08-09-2008, 03:47 PM
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thanks for input guys at least I can fully close the trunk by just pressing on it as a normal car . funny the one on my old camaro never broke.
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#5 (permalink) Old 08-09-2008, 04:56 PM
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#6 (permalink) Old 08-10-2008, 01:51 PM
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so much for that now trunk is closed for good, mechanical key, smart key , and switch on door doesn't work what good is emergency open if it's inside of trunk now to MB dealer hope they can do something. just another MB crap box.my next car will be a six cylinder chevy pickup like a 1965.
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#7 (permalink) Old 08-10-2008, 06:01 PM
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I'm willing to bet it's the trunk lid sensor (grey plastic pin ) that senses whether the lid is closed or not. It's about 9 bucks.

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#8 (permalink) Old 08-10-2008, 07:03 PM
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Even with bad sensor (or for that matter with the main battery disconnected) the mechanical key should still works, so his case sounds like the mechanical parts of the trunk locking system is not working.
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#9 (permalink) Old 08-10-2008, 07:29 PM
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#10 (permalink) Old 08-10-2008, 10:53 PM
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Quote:
Originally Posted by RKH View Post
Even with bad sensor (or for that matter with the main battery disconnected) the mechanical key should still works, so his case sounds like the mechanical parts of the trunk locking system is not working.
The issue was not opening the trunk lid but closing it fully, if I got it right. You should not need the mechanical key when closing it. An he already explained it does close when operated like a normal trunk lid (slam it closed).

The auto-closure system would not work without battery power, you cannot judge if it is electronic or mechanical when the battery was disconnected.

I'd follow the good advice given so far (don't try the latest advice from Kajtek1 first ).

PS. did the Camaro have a trunk closing aid feature? If not, I'm not surprised it did not get broken. In any case, I've worked on one very long time ago and fixing it was not too complicated).
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