Popping sound from panorama sunroof.

[JDBKLYN89]

Hi guys, Over the past few weeks I've noticed that every time I enter an incline on an angle, such as making a turn into a gas station or driveway from the street, where the front left wheel ascends before the front right or vice-versa, I am getting a pretty loud popping sound from the rear section of the panorama sunroof. It is not a subtle creek or rattle but a very audible pop. At first I thought it had something to do with the cold weather but it has been nearly 60 and above here in NYC and it is still happening. Has anyone experienced anything like this?

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[thekurgan]

It has to do with the chassis flexing, due in part to the absence of roof material because of the panorama roof. The dealer may be able to lubricate the seals, which seems like what you're experiencing here when the car flexes. I don't have the pano roof, but I usually order krytox 205 and apply it myself to the seals to quiet them down and allow them to move without sticking.

[blackbullit]

Originally Posted by JDBKLYN89

Hi guys,
Over the past few weeks I've noticed that every time I enter an incline on an angle, such as making a turn into a gas station or driveway from the street, where the front left wheel ascends before the front right or vice-versa, I am getting a pretty loud popping sound from the rear section of the panorama sunroof. It is not a subtle creek or rattle but a very audible pop. At first I thought it had something to do with the cold weather but it has been nearly 60 and above here in NYC and it is still happening. Has anyone experienced anything like this?

Also notice this without panorama sunroof on my E 550-anyone else hearing this?

[thekurgan]

Check the rear speaker panel, I found mine wasn't "clicked" all the way in and was making some minor noise.

[WEBSRFR]

This can be fixed. My dealer lubricated and made some "adjustments" and all pano roof sounds went away. If the dealer can't fix this, they don't know what they are doing -- find another dealer. It is not normal or acceptable for the pano roof to make noise.

[evansw220]

Originally Posted by JDBKLYN89

Hi guys,
Over the past few weeks I've noticed that every time I enter an incline on an angle, such as making a turn into a gas station or driveway from the street, where the front left wheel ascends before the front right or vice-versa, I am getting a pretty loud popping sound from the rear section of the panorama sunroof. It is not a subtle creek or rattle but a very audible pop. At first I thought it had something to do with the cold weather but it has been nearly 60 and above here in NYC and it is still happening. Has anyone experienced anything like this?

There's a TSB for that. My Pano roof did the same thing and the dealer took care of it. This was back in december, no noise ever since. I took it to MB Mahattan where i bought the car.

[El Cid]

Originally Posted by evansw220

There's a TSB for that. My Pano roof did the same thing and the dealer took care of it. This was back in december, no noise ever since. I took it to MB Mahattan where i bought the car.

What's the TSB number? My 2010 also makes noise when I enter my driveway, parking lots, etc, especially if at an angle. Also noticed that it makes a very loud creaking noise if I open or close it when it has been in the hot sun for a while.
Dealer lubed it and that seemed to help for a while, but it came back.
Have owned several cars with sunroofs and none ever made a noise. Of course they were made in Asia.

[WEBSRFR]

Does anyone know what the MB specified service interval is for the pano roof? I think if it is maintained properly with the required lubing and adjustments that is the best way to keep the noises away...

[thekurgan]

Krytox based lubes are the only lubes that work on things like this. The standard weatherstrip lube won't last once the UV attacks the rubber surfaces. VW uses it exclusively on that P.O.S. EOS thing as well as Chevy for the vette removable roof panel. It is NOT cheap, but you need very little.