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Pelican Technical Article:

Sunroof Lubrication

Steve Vernon

Time:

1 hour1 hr

Tab:

$10 to $120

Talent:

*

Tools:

Clean lint free rags, small paint brush, lube

Applicable Models:

Mercedes-Benz C250 (2012-14)
Mercedes-Benz C300 (2008-14)
Mercedes-Benz C350 (2008-14)

Parts Required:

Lube

Hot Tip:

Don't leave any lint or dirt in the tracks

Performance Gain:

Silent operating sunroof

Complementary Modification:

Check you headlight bulbs

Unlike Porsche and BMW, Mercedes Benz calls for lubricating the channels that the sunroof rides in. There are two channels; one for the headliner section and one for the glass. Mercedes calls for the use of a special lubricating paste proprietary to Mercedes but it only comes in a large tub and is very expensive, and while Mercedes insists on using only this lubricant I have heard of others using any good synthetic based lube without any issues. The trick is to get the tracks really clean and only use enough lube to lightly coat the tracks.

There are two track rails that need to be cleaned and lubed.
Figure 1

There are two track rails that need to be cleaned and lubed. The inner track (red arrow) that the headliner runs on and the outer track (yellow arrow) that the glass slides on.

Prep is the most important part of this job.
Figure 2

Prep is the most important part of this job. You need to carefully and completely clean both tracks making sure not to leave any lint behind when you are done.

This is the official Mercedes lube that the factory recommends.
Figure 3

This is the official Mercedes lube that the factory recommends.

Use a small firm paint brush and apply a small amount of lube to the roof track, making sure to get both sides of the track.
Figure 4

Use a small firm paint brush and apply a small amount of lube to the roof track, making sure to get both sides of the track. The key is to not use any more lube than is necessary as all the extra lubricant will only catch dirt and debris.

Use the same procedure for the headliner track (red arrow).
Figure 5

Use the same procedure for the headliner track (red arrow). Once both tracks are lubed operate the roof a few time and check for any excess lubricant that may have squeezed out while operating. Wipe up the excess and you are good to go. Make sure to inspect the tracks at least once a year.

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Page last updated: Fri 12/9/2016 02:58:59 AM