Question about 2006 Mercedes-Benz Mercedes Benz CLS500
CLS550 2010. Same complaint trunk won't open, third brake light and license plate lights not working. Two ground wires (Brown) were broken inside the bundle of wires right were the zip tie holds them to the trunk lid arm. When I first looked I missed them. Remove all the corrugated wire protection and look the wires over very closely. One of them was broken inside but the wire just looked kinked on the outside. The other was broken in too. 7/9/17
Posted on Jul 09, 2017
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Posted on Jan 02, 2017
I had the same problem on a 2008 Civic. It turns out it was a poor wiring harness design. The harness was being pinched as the trunk lid opens and closes. In the wire bundle, there is a crimp connector where 3 wires connects to 1 wire. The 1 wire in the crimp came loose. I reconnected everything with a new crimp connector, taped up the wire loom, and everything worked once again.
Posted on Aug 27, 2009
This is quite a process....
1) Disconnect and isolate the negative battery cable.
2) Remove the rear shelf trim panel.
3) Disconnect the CHMSL electrical connector (1).
4) Remove the two mounting fasteners (3) to the CHMSL (2).
Installation is opposite of removal.
Rear shelf trim panel
1) Disconnect and isolate the battery negative cable.
2) Remover the right and left lower and upper C-pillar trim.
3) Remove the nut that secures the center rear seat belt lower anchor to the stud on the floor panel and feed the seat belt webbing back through the opening in the top of the rear shelf panel trim (2) to the retractor.
4) Remove the push-pin fastener (1) that secures the trim (2) to the rear shelf panel.
5) Slide the trim forward to disengage the S-clip that secures the underside of the trim to the to the center of the shelf panel.
6) Remove the trim from the rear shelf panel.
1) Position the trim (2) onto the rear shelf panel(3).
2) Slide the rear edge of the trim rearward to engage the lens bezel of the center high-mounted stop lamp and far enough to engage the S-clip that secures the underside of the trim to the center of the shelf panel.
3) Install the push-pin fastener (1) that secures the trim to the rear shelf panel.
4) Pull the center rear seat belt lower anchor and belt webbing from the retractor through the opening the the top of the rear shelf panel trim and back down to the stud on the floor panel.
5) Install and tighten the nut that secures the seat belt lower anchor to the stud on the floor panel. Tighten the nut to 34 N m (25 ft. lbs.).
6) Reinstall the right and left upper and lower C-pillar trim.
7) Connect the battery negative cable.
C-pillar trim removal
Hope this all gets it done for you........
Posted on Mar 12, 2010
Even Mercedes Service Departments cannot agree what is involved on a D service.
It is usually the 2 year periodic maintenance which includes transmission service, oil service and visual check of running components.
Most all Mercedes Dealers will write this up as a B service. It's up to you they don't over service the vehicle. Some MB dealers will sell you shocks and/or rear axle oil brake fluid flush, coolant flush and wiper replacement and who knows what else.
I suggest you find a GOOD independent Mercedes specialist and ask for a B service and report on any items needing attention.
Ask them to reset your Service FSS or oil interval reminder in the cluster, or do it yourself....it's in your Handbook around page #290. iirc.
Cost can be anywhere between $200.00 and $600.00.
Posted on Jan 19, 2011
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