The Archman

I have a rattle coming from the sunroof operating panel. It is not a loose sunroof or anything to do with the glass. The sound is coming from inside the plasitc operating panel. How do you get the panel off. I do not want to break anything ( or could be $$)

RichardM98

There is a DIY on sunroof replacement on benzworld.org. There's also a great thread on this forum about replacing/recovering the headliner which I believe covers removing all/some of the sunroof assembly.

I have seen postings where owners have stuffed some crumpled newspaper in the gap above the shade. No reports on what happens if it gets shifted and binds the sunroof.

raymond g-

120 is the sliding sunroof cover. it slide over 40. i believe the low frequency
rattle occurs when the sliding cover oscillates in time with road undulations
touches the headliner when the cover is slide back to reveal the sunroof.

after trying a couple of ghetto quick fixes, i had some free time so I lowered
the rear of the headliner just enough to slide some bubble wrap just above
each of the two rear passenger seating areas (ignoring the middle). this
would put the bubble sheets just inside the two "D" shaped stirrups you
see in the headliner.

the rumbling has never returned in the 2 yrs since



in a nutshell, and from memory, what was required was to remove the C
pillar covers, the rear light fixture, and the two handles above the rear
doors. it was more challenging than simple, but less complex than difficult.

Plutoe

Could very well be the in car temp sensor. The sensor sucks in cabin air and tells the AC control unit the on going temp. That could be vibrating.

To access the module remove the two plastic covers from the rear then look for the two indents in the rear of the plastic housing and push in. The module should drop in your lap. Good luck!!

saintz

If the headliner thumps on speed bumps and rattles with the sunroof open, the issue is the headliner is hitting the metal support frame. It's easies to remove the sunroof so you have more room to work on this. It's easy once you get the hang of it.

Put sunroof up. Remove rubber baffles from each side of sunroof. Unbolt three torx screws. Lift sunroof out and put on cloth padding. Pull sliding cover forward, unclip, and remove.

Look into the crack. You'll see the headliner is hitting the metal frame. Put some adhesive foam (weather stripping from Lowes) or other padding in between the two.

Put everything back. Look at the bolt marks on the sunroof to make sure you line it up correctly.

Going from top down, you have roof, sliding cover, metal frame, headliner. The problem isn't the cover, it's the headliner hitting the frame. You can pad this to prevent vibrating without interfering with the sliding cover.

The Archman

Thanks to all for taking the time to help me on the subject!