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  #1  
Old 08-15-2008, 09:50 AM
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Join Date: Jul 2007
Location: Raleigh, North Carolina USA
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'90 300 SEL sunroof does not work

What could cause it to not work? The electrical part works, I hear a humming, but it does not go back. A mechanic with a quick look thinks it will be $1400 to replace. True?

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1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)
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  #2  
Old 08-15-2008, 10:44 AM
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Join Date: Feb 2005
Location: Yardley, PA
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Originally Posted by matchek1 View Post
What could cause it to not work? The electrical part works, I hear a humming, but it does not go back. A mechanic with a quick look thinks it will be $1400 to replace. True?
Could be a disconnected/broken cable or connection. Also a possible stripped gear in the motor. Sunroof repair is very costly, I was quoted $2000 from the dealer. The cost is mostly labor and a lot of mechanics will not touch it.

There is a great amount of posts on this subject with much detailed info. I repaired mine for just the cost of a new cable. It takes time and patience but I had mine like new in one day. I work very slow and take the time to clean/check everything while the opportunity presents itself.
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Old 08-15-2008, 01:39 PM
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wow - amazing. and it looks so simple.
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1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)
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Old 08-15-2008, 02:00 PM
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Originally Posted by matchek1 View Post
wow - amazing. and it looks so simple.
It is rather simple, most of the time was consumed by removing the trunk panels and the removal of the sunroof motor. I was very careful with removing the sunroof headliner. My goal was to avoid further damage and understand the workings of the sunroof. Since the cable was stuck in the guide tube it took me a while to free up the sunroof. It required removal of the sunroof motor which entailed many climbs in/out of the trunk and various body positions.

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'71 Triumph TR6
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'41 Ford 9N tractor
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