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Old 05-20-2007, 02:30 AM   #1 (permalink)
BenzWorld Junior Member
Date registered: May 2007
Posts: 15
Repair sunroof?

I have a 1980 300D.
My sunroof is a really slow when sliding back and forth, and I am wondering how difficult it is to repair this problem? Do I need to tear out the headliner and replace a motor? Or is it just an issue of adding a little WD-40?
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Old 05-20-2007, 03:45 AM   #2 (permalink)
BenzWorld Senior Member
Date registered: May 2005
Vehicle: 1985 300CDT, 2004 SLK 320 SE, 2012 C300
Location: New York
Posts: 509
You need to clean and re-grease the sunroof tracks with M/B sunroof grease.

Remove the drive cable, clean and re-grease.

Clean the cable tube back to the drive motor.

Assemble and enjoy. About 1.5 hours.

Lots of threads

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Old 05-20-2007, 06:09 AM   #3 (permalink)
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Date registered: May 2005
Vehicle: 1982 300CD
Location: West Virginia
Posts: 4,882
Check out They have a kit with instructions.
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Old 05-20-2007, 06:48 AM   #4 (permalink)
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Date registered: Feb 2007
Vehicle: 300SD
Location: Florida, USA
Posts: 10,160
Originally Posted by Gregs300CD
Check out They have a kit with instructions.
I have to endorse that advice. I bought one of these kits myself or about $ 40. The instruction booklet that comes with the kit is the most important. Without it, you can easily mess things up and end up with an expensive repair.
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