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2002 C230 Kompressor Coupe
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32 Posts
Discussion Starter #1 (Edited)
Hey guys!

Ran into this problem last night where I was closing my panoramic roof and it suddenly stopped moving forward and started making this awful grinding, clacking sound! I tried playing with it a bit to get the thing to close properly and get the shade closed, and actually got the thing stuck tilted slightly up. I was pretty upset.

After looking at the forum last night, I inspected the problem and came upon a quick, cheap, and permanent fix to the problem. My roof works perfectly again!

What kills me is wondering if I took it to the dealer and paid $80 for an estimate, would they come back telling me I had a $4000 job ahead of me. I've owned this car for about 3 years and have found that the worst thing about it are the crooks that pass for Mercedes specialists. I avoid them like the plague!

I've got photos with directions on Flickr: C230 Panoramic Roof Problem - a set on Flickr

Sorry, I don't know how to post photos on here. Hope this helps!

Mike :D
 

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2002 C230 Kompressor Coupe
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32 Posts
Discussion Starter #3
I would imagine. I don't know what the regular sunroof layout is, but most models that I've seen (VW, Audi) always have the panel you can remove to access the motor that drives the roof panel so you can crank it shut in case of emergencies.

If I was you, I'd first open this panel leaving the sunroof switch connected. Turn the key on, and actuate the sunroof button while watching the motor and look for excessive movement especially where you see the motor being pushed away from the gears it's supposed to be driving. If this is the case, try to torque the motor's mounting bolts. If you can't, see if you have these same rubber grommets built into the mounting bolts that the panoramic has. You probably do to minimize vibration. You could either try calling the Mercedes dealer to see about picking up new rubber mounting grommets for the sunroof motor, or just remove one of the bolts and go to your local hardware store and pick up 1/4" lock washers that'll fit on the bolts without overhang. Try putting one of these washers on every mounting bolt you can without removing the headliner, and see if that fixes your problem. It took only one washer on the one mounting bolt I could access through the sunroof control pod to fix the problem with my roof.

Once you can actually get the roof open, you'll also want to clean the tracks with alcohol or WD40 and then regrease them with a good quality synthetic axle grease.

This won't take you long, and hopefully it'll fix your problem.

Good luck,

Mike :D
 

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'07 C280 4matic, '06 530i, '98 ML320
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1,562 Posts
Thanks for the info and the feedback. I will open the over-head switch panel and see what I find out on my '07 C280. If the grommet is separately sold, I would rather replace it now... rather than wait until it's worn.
 

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Once you can actually get the roof open, you'll also want to clean the tracks with alcohol or WD40 and then regrease them with a good quality synthetic axle grease.
mbryant107, I wouldn't recommend spraying WD-40,... it has too many harsh chemicals that'll degrade the rubber seals of the pano-roof. Better to use silicon lubricant spray as a cleaner and lubricant which will keep the rubber seals soft and flexible. Of course, do wear rubber/latex gloves.

Mike (mbryant107), give yourself a pat on the shoulder! Very clever and innovative pano roof fix. Great photo DIY description on FlickR :thumbsup::thumbsup::thumbsup: :bowdown::bowdown::bowdown:
 

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1983 380SL, 2003 C230K Coupe & 2004 CLK500
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My 2003 203 coupe has the exact same problem Mike's did. I put the washer in like he said but the noise only got louder I tried rubber washers, metal and rubber washers, and every combination in between. The noise either only gets louder or softer but the sunroof still does not close. Does anyone else have any other ideas?

Thank you in advance,

Ryan
 

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1983 380SL, 2003 C230K Coupe & 2004 CLK500
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I tried so many times that the original washer has come off. I put a 1/4 inch thick rubber washer above the motor and one metal one sandwiched between two rubber ones below the motors. Then I screwed it all together much tighter, and when I try to close the sunroof there is only a single clicking sound as if the motor does not do anything, as if it does not have enough energy to work.
Does this mean I need a new motor? Any thoughts would be much appreciated.

Thank You,

Ryan.
 

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2002 Mercedes-Benz C230 Kompresser Sport Coupe, 6-speed, leather, pano roof
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110 Posts
Ryan,

Does the pano open or just not close completely? When was the last time the rails and cassette was greased? Can you open or close it manually?

The clicking noise you describe could be the motor gear is stripped or it could be the cassette gearing is stripped.

My advice is to have a pro check this out. Find a good independent mechanic you trust with it and have him/her check it out. These mechanisms are very complex and fragile. Many people have problems with them (including me) and most just try to get it shut and then not worry about it because it can be a very expensive repair (once again...from experience...had to replace the entire cassette and a motor)

Pano roofs are cool when they work...but are a pain when they don't.
 

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1983 380SL, 2003 C230K Coupe & 2004 CLK500
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RedBaronofRedBud (and anyone who will help),

When this problem started years ago, the roof opened all the way and I had to manually shut it. I learned then that the roof and sunshade can open but not close. For the last year, I would open the sunshade only, but not to the max open position, because that is where it gets stuck. Now I've opened the sunshade all the way and it got stuck so I just manually closed the shade using the right side motor. What is weird though, is that the left motor makes the loud noise we all love when I try to close the shade, but if you manually close the shade a tiny bit using the right motor, it closes.

Which parts should I lube with the silicone spray?

Thanks for the advise, and believe me, the last thing I want to do is add cost to this problem.
 

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2002 Mercedes-Benz C230 Kompresser Sport Coupe, 6-speed, leather, pano roof
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110 Posts
Ryan,

There is a specific grease that MB recommends for the pano roof. I dont have the part number in front of me, but Im sure that there are others on this great forum that have that information at hand. Its not cheap (of course) but its much better than just spraying silicone on it.

Search the forums for the panoramic roof. There has been much discussion about this and there have been some that have posted engineering exploded parts diagrams with lube points for the pano roof. Does anyone here have those handy and can post them?

Your symptoms are very similar to many that have had problems with this assembly. I can tell you that its typical for the sunscreen to stop when opened all the way if the sunroof is not sitting and sealed properly. That said, moving it with the manual override and then finishing the closure with the motor/switch is the procedure you have found that works. I had the same problem, so until I had it repaired (long and expensive story) I would simply not open the sunscreen all the way (until the day curiosity got the best of me...ugh).

My question is this...Is the roof closed and is it sealed? If it is, then that's good. Try and learn to live with not opening the screen too far and not opening the roof. If its not closed or will not close, then it could be bad. However, I cant see it or hear it, so I could be wrong. I would still take it to a professional since this is a very finicky assembly, not known for its robustness or its ease of repair. As with anything MB, its not cheap for parts or repairs. I can tell you that the one motor that opens and closes the roof is 400+. The cassette assembly is around 2K. The labor is somewhere north of a grand. You get the picture.

I'm not trying to scare you, but I had the same sounds in my pano and had to replace the motor. (and cassette assembly and linkages, but I digress). My point is if you can get it closed...leave it closed. If you HAVE to have it open and close correctly, take it to an expert and let them diagnose it. I hope yours is not as bad as mine was, but be prepared that it could be an expensive repair.

I hope it works out for you, Ryan. Let us know how it goes.

Red B
 

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CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
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Yep, right there in WIS - print to PDF, ftp to web, and there it is! :)
 

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Hey guys!

Ran into this problem last night where I was closing my panoramic roof and it suddenly stopped moving forward and started making this awful grinding, clacking sound! I tried playing with it a bit to get the thing to close properly and get the shade closed, and actually got the thing stuck tilted slightly up. I was pretty upset.

After looking at the forum last night, I inspected the problem and came upon a quick, cheap, and permanent fix to the problem. My roof works perfectly again!

What kills me is wondering if I took it to the dealer and paid $80 for an estimate, would they come back telling me I had a $4000 job ahead of me. I've owned this car for about 3 years and have found that the worst thing about it are the crooks that pass for Mercedes specialists. I avoid them like the plague!

I've got photos with directions on Flickr: C230 Panoramic Roof Problem - a set on Flickr

Sorry, I don't know how to post photos on here. Hope this helps!

Mike :D
Hi, I have had similar problems with my panoramic roof and I got a qoutation for over £500 to fix it. After reading your post I went to the local hardware store and I purchased a washer and followed your steps to fix the roof and after resetting it, it works as good as new thanks for all the help and saving me loads of money :)
 

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I tried so many times that the original washer has come off. I put a 1/4 inch thick rubber washer above the motor and one metal one sandwiched between two rubber ones below the motors. Then I screwed it all together much tighter, and when I try to close the sunroof there is only a single clicking sound as if the motor does not do anything, as if it does not have enough energy to work.
Does this mean I need a new motor? Any thoughts would be much appreciated.

Thank You,

Ryan.
All you need to do is to reset the roof it has been fixed but its not opening and closing because when it jams it stops working totally and you need to reset it by pressing the open button for 10 seconds then the close button for ten seconds then the open button again and the roof should automatically open to show its been reset try it , it worked with mine :)
 
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