Slow panoramic sunroof

Slow panoramic sunroof

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Discussion

cringle

Original Poster:

402 posts

193 months

Wednesday 20th July 2022
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Evening all,

We have a 2012 C250 with the panoramic roof and it's dreadfully slow. Lubricated with Wd-40 white lithium grease, initially its fast and smooth but literally a day or two later it opens slowly and struggles to close...meaning I have to grab it and tease it along. Any ideas as to a solution? Do the runners need cleaning? Is there a better lubricant? Is the motor on its way out?

TIA

Stegel

1,989 posts

181 months

Thursday 21st July 2022
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Mercedes specify a lubricant called Gleitpaste for the sunroof runners, and nothing else seems to work as well or last. You can buy a lifetime supply tub from the dealer - probably £80 or £90 now - although smaller amounts are sold on eBay.

PDP76

2,581 posts

157 months

Thursday 28th July 2022
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Once a year I clean out the rails on the pano roof as much as I can and where I can reach into.
I’ve used white lithium on the moving parts and removed any excess with a cotton bud/cloth.
Never had any problems with the roof operation doing this