Sunroof lubrication questions????
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 1,481
Likes: 2
From: Southeast
2008 C300 Sport, RWD, US
Sunroof lubrication questions????
What kind of lubricant do you use on the sunroof of an 08 C300?
Also, where do you lubricate it?
We're having 97 degree days already and this year my sunroof make a funny noise when opening in a vertical direction. I don't recall it doing this in either 2008 or 2007.
Also, where do you lubricate it?
We're having 97 degree days already and this year my sunroof make a funny noise when opening in a vertical direction. I don't recall it doing this in either 2008 or 2007.
MBWorld Fanatic!
Joined: Apr 2008
Posts: 2,144
Likes: 326
From: A Dutchy Living in Marseille, France
EQE SUV AMG-line 350+
squeaking noise you mean?
i got that when it's really hot, but only when it lifts up.
once it goes backwards, it's ok
i got that when it's really hot, but only when it lifts up.
once it goes backwards, it's ok
Last edited by Egonvdv; Jun 18, 2009 at 11:00 AM.
Newbie
Joined: Nov 2007
Posts: 11
Likes: 0
From: Olympia, WA
'08 C350
Months ago, I took my C350 to Phil Smart (Seattle) for the rear seatbelt recall and I mentioned the groan that the sunfoof makes when I tilt the back up. It doesn't always do it, but I have never paid close enough attention to figure out just when it does do it. Anyway, they lubed it and it still groaned, so they orderd and installed a new sunroof motor. It still groans. Maybe when I take it in for a service I will mention it to them again, but for now, I just live with it since it doesn't always groan.
Trending Topics
MBWorld Fanatic!
Joined: Feb 2004
Posts: 3,986
Likes: 6
From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
GROANING
Months ago, I took my C350 to Phil Smart (Seattle) for the rear seatbelt recall and I mentioned the groan that the sunfoof makes when I tilt the back up. It doesn't always do it, but I have never paid close enough attention to figure out just when it does do it. Anyway, they lubed it and it still groaned, so they orderd and installed a new sunroof motor. It still groans. Maybe when I take it in for a service I will mention it to them again, but for now, I just live with it since it doesn't always groan.
NO WD-40!!!
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Member
Joined: Sep 2008
Posts: 145
Likes: 0
From: Waldfischbach-Bergalben, Germany
2008 MB C300 Sport (Mars Red)
Same problem here... I thought that I read in the Service B statement that they lube the cables for the sunroof. Could be mistaken but it's ringing a bell.
Super Member
Joined: Oct 2008
Posts: 519
Likes: 50
From: Mississauga
GLA45 AMG, GLC43 AMG
it's just the seals that expand and are tight, that make the sound, and only on hot days, the past few days it's been cold and damp and no noise, bet ya next week when it gets hot here in TO it will do it again.....something we live with, well at least I do, my pano roof in my X5 did the same thing, it did on my 535 as well, not a big deal, and no lube will help, as the lube will just dry out, and it will start doing it again.....
do the guys in the south have this issue, is it all the time, or not, how about when it rains and things cool down, does it go away ?
.
do the guys in the south have this issue, is it all the time, or not, how about when it rains and things cool down, does it go away ?
.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,237
Likes: 2
From: Miami, FL
C63 AMG(sold), 2009 CL550, 2010 S550 Majestic Black, 2010 ML550, 2006 C230, 2009 Venza
do the guys in the south have this issue, is it all the time, or not, how about when it rains and things cool down, does it go away ?
It's quite annoying
Newbie
Joined: May 2009
Posts: 9
Likes: 0
From: Brisbane, Australia
W107, S500
MB Special Lubricant - For lubricating outer guide rail of panorama roof
001 989 50 51
MB Lubrication Paste - For cleaning outer/inner channel, shift gate, pivot arm of wind deflector of top sliding roof (panorama roof)
001 989 46 51
Apparently, this is also known as Klueber Polylub GLY 801
001 989 50 51
MB Lubrication Paste - For cleaning outer/inner channel, shift gate, pivot arm of wind deflector of top sliding roof (panorama roof)
001 989 46 51
Apparently, this is also known as Klueber Polylub GLY 801
Newbie
Joined: May 2009
Posts: 9
Likes: 0
From: Brisbane, Australia
W107, S500
The paste is to clean the guides, runners and assembly before oiling - if necessary to remove dirt build-up. The oil is purely for lubrication. The expensive part..the paste is around $220.00 and the oil slightly less for a bottle that fits in the palm of your hand! The bad news, you can use silicone spray, WD 40, vaseline on your sunroof, but according to Mercedes friends who work on them, they do a fair bit of repair work on sunroofs when people do use 'other than recommended" lubricants. They only use recommended as it works. You only need a few drops so it will last and so will your sunroof operation. I bought the oil, it's cheaper than the repair option down the track. Hope that helps.
Junior Member
Joined: Sep 2008
Posts: 59
Likes: 1
From: escondido, socal
05-350slk and 08-c350
take it to the dealer and complaint, they lube it free - should be. unless the car is out of mfg warranty.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
The paste is to clean the guides, runners and assembly before oiling - if necessary to remove dirt build-up. The oil is purely for lubrication. The expensive part..the paste is around $220.00 and the oil slightly less for a bottle that fits in the palm of your hand! The bad news, you can use silicone spray, WD 40, vaseline on your sunroof, but according to Mercedes friends who work on them, they do a fair bit of repair work on sunroofs when people do use 'other than recommended" lubricants. They only use recommended as it works. You only need a few drops so it will last and so will your sunroof operation. I bought the oil, it's cheaper than the repair option down the track. Hope that helps.
Newbie
Joined: May 2009
Posts: 9
Likes: 0
From: Brisbane, Australia
W107, S500
I replied in response to "Some lubricants can degrade the weatherstripping. Problem is I don't know which. ". This stuff from Merc does not, apparently most other lubricants do. It's advice, I didn't set the price - cheaper in your US $ compared to Aussie $'s anyway. Oils ain't oils and I don't have warranty mate!
Senior Member
Joined: Oct 2007
Posts: 328
Likes: 1
From: Reston, VA
15 E350 4Matic
I have had that noise since the first summer I got my car. $400 
I can live with the noise. Will just try not to open the sunroof during hot days. I usually use my AC anyway. I think once you have you AC on and you are crusing along on a highway, the noise goes away after it cools down a bit.
I can live with the noise. Will just try not to open the sunroof during hot days. I usually use my AC anyway. I think once you have you AC on and you are crusing along on a highway, the noise goes away after it cools down a bit.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
I replied in response to "Some lubricants can degrade the weatherstripping. Problem is I don't know which. ". This stuff from Merc does not, apparently most other lubricants do. It's advice, I didn't set the price - cheaper in your US $ compared to Aussie $'s anyway. Oils ain't oils and I don't have warranty mate!
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 1,481
Likes: 2
From: Southeast
2008 C300 Sport, RWD, US
I just googled treating weatherstripping and found in a Hundai forum that someone was recommending a silicone lubricant to treat weatherstripping. They also commented against WD-40 due to its petroleum base.
Anyone have any thoughts on using a silicone lubricant?
Years ago I had a tube of silicone greese. Is that the same thing?
Anyone have any thoughts on using a silicone lubricant?
Years ago I had a tube of silicone greese. Is that the same thing?
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Yes - same thing. Castrol also sell a product simply termed rubber grease that would be safe on any product containing a proportion of natural rubber like weather strips.
Silicone is not the greatest lubricant but better than nothing. Be careful with silicone sprays because they frequently have petroleum carriers or propellants. Certain waxes & products containing teflon can be good in this application as can products developed for plastics lubrication in the electronics industry. You really want oils, greases & sticks for sunroofs. Aerosol sprays need careful consideration as to constituents.
Silicone is not the greatest lubricant but better than nothing. Be careful with silicone sprays because they frequently have petroleum carriers or propellants. Certain waxes & products containing teflon can be good in this application as can products developed for plastics lubrication in the electronics industry. You really want oils, greases & sticks for sunroofs. Aerosol sprays need careful consideration as to constituents.
Newbie
Joined: Oct 2008
Posts: 4
Likes: 0
From: Fort Wayne IN
2009 C300 Sport 4matic
Sunroof Noise and other problems
We have the same problem on our 09 C300 Sport 4matic. It has been in to the dealer 4 times already. Spoke to Service Manager yesterday, after giving them a bad review. He told me they were going to call MB and speak to phone tech about problem. I told him that should have been done the second time the car was taken in for the problem. This is our second MB we are very displeased with the car and service dept at local dealer. We have clear coat peeling off front bumper now. I called MB USA yesterday and spoke to them about Indiana Lemon law. The law states if the car has been in for service 4 times (in the frist 12 months or 12k) for the same problem and the problem is not fixed, then the car is a Lemon. I recieved a call back and it is being considered for a buy back.
