Panoramic roof making cracking noise

[Johnny007]

Hi although I joined a few years back I was not much of an active member or at all to be honest. I'm a newbie I'd say. So please forgive me if I do anything wrong in asking a question in the wrong place in advance.

I have 2011 e350 diesel 265 with panoramic roof, the car is out of warranty. I hear a crackling type sound from the roof bar on the panoramic roof which splits the two sides of the roof so it will be at the rear of the front seats above. The noise comes on all roughish surface it can't be heard on a smooth road or at high speeds on a motorway. The sound could be described as poping also it makes
Little difference if it is open closed or tilted. It's doing my nut in I have tried ringing main dealers and a specialist who can't figure it out.
Everyone seems to suggest hours of labour to see the roof lining I think it's the bolts inside maybe need tightening or washer replaced. I'm from the london area.

Does anyone have experience of such an issue and if so what was the fix and where. Please help!!!!

 

[st13phil]

There are posts from US owners on exactly this issue on the mbworld forum. It's caused by the pano roof mountings not being 100% tight, and the fix is simple but quite labour intensive. Why not talk with Wayne Gates or another trusted indie?

 

[Deleted member 6183]

Every car with a sunroof or convertible roof has done this eventually, I just learned to live with it.

Is it more noticeable when hot or cold?

 

[Johnny007]

Thanks for the replies.

St13phil I have been through the American forums there was a lot
Of talk but not much soloution or fix provided the topic got diverted.

DrFeelGood.

I went Waynegates a few years back and based upon something I won't to impressed without being disrespectful to the garage il put it down to my personal experience.

I spoke to a grage in Welwyn garden city known as welwynMerx he replied by email and says he's encountered the problem before and wants 70+vat for an hour diagnosis, il ask if he knocks that of the bill if he does work. I just want someone who knows what there doing. Have you heard of welwynMerx ?

 

[Johnny007]

I've heard noises in the past like if I go down from a kerb but recently it got louder only in a week or so.

 

[RicB]

I have a c class coupe (w204) with a panoramic roof, I occasionally get a loud knock noise from somewhere up there, it's usually going on or off the drive but not every time.

 

[Johnny007]

Mines more or less all the time , when driving. Apart from motorways it's quite there
It either the mounting bolts or the alignment of the glass roof. I've approached so many independent specialist nobody knows. Got it booked in with Welwyn merx I hope he knows what he's doing and not charging me to be the experiement.

 

[Johnny007]

Update Thank the lord almighty it's been fixed , with the help of Welwyn merx and my research two hours labour and the bolts needed tightening under the headliner applied some locktite and it done the job. I thought I'd write this just in case anyone else ever has the issue. Happy days!!! ��