Help-W124 Sunroof Stuck Part Open

[Jerzy Woking]

Had some time to go around my 300E and sort out a few things, seeing it hasn't been used in a while. All seat runners greased up so they now move fore and aft easily.

 

Also opened the sunroof to clear all the drain holes, but the roof is now stuck part open. It will go back 2 inches and go forward two inches, but no more. I can hear a noise like a motor getting stuck when it comes to a stop. There doesnt seem to be a way of munually shutting the roof. What can I do when it just does this:

 

20160403_152412.mp4Fetching info...

[BorniteIdentity]

On the 190e there is a manual mechanism in the boot from memory.  I've never had to use mine, mind - so I'm not sure.

 

Might be worth trying to get some grease in the runners if it's moving a couple of inches.  That might be enough just to free up the wheel.  Coincidentally, I just did mine yesterday. (You probably didn't want to hear that)

 

Good luck.

[spike60]

I've just been fiddling with my w126 roof, it has the motor behind the panel above the passenger rear wheel inside the boot. There is a red plastic nut, 13/16 spark plug size, that manually turns the motor. Mine occasionally sticks about 1/3 way closed and a nudge on the motor and it's away again. Once mine sticks it will not move either way even with assistance until I wind it a little way manually

[hauserplenty]

You'll just need to use the 17mm lug wrench to turn the motor by hand. On the wagons it's located in the sidewall next to the spare tire, so try looking on the left-hand side first. The motor assembly should be a black box with a white plastic nut.

Reassembly is the reverse of removal.

[Jerzy Woking]

Stupid question time. How do I remove the trim to get to it? I have neither a workshop manual or a HBOL.

[spike60]

On mine it just pulls away, it's only stiff carpet. There is a plastic blank in the panel but that may line up with the motor, -mine nearly does!

[hauserplenty]

I'd start by peeling it back around the hinges, then look for fasteners. Probably the plastic type similar to those used on door panels. Or start from the spare tire and work your way toward the front of the car. But you should* be able to just fold the lining back until you see it.

[spike60]

Cover. This is underneath the passenger side boot hinge on a W126.

 

 

 

Under the plastic cover. Red nut is roof. White is aerial.

 

[forddeliveryboy]

 

Before you've reach the red hex nut, use a torch to look as best you can for a mechanical obstruction at the roof end. Find someone to try and help the roof back into place as you operate the motor and if you do it by hand, don't force the nut round too hard - the bowden cable is probably struggling to move the roof section. Once you've kinked or otherwise damaged the cable, it's a pita to replace. 

 

Worse case is that the roof won't close without taking the headlining out and sorting whatever's wrong - proceed with care!

[Jerzy Woking]

OK-cover off. I filmed it when pressing the roof botton. The lower (serrated) know turns about 45 degrees either way, but then stops and makes a noise.

 

Don't want to force anything so which nut should I turn?

 

[spike60]

The hex one I would reckon. On mine the serrated one seems to be aerial, senken= lower, heben=raise from German to English. My roof one isn't smooth when you wind it. If the motor can't move the roof it it will be stiff but don't force it.

[richardmorris]

Book of lies.....

[richardmorris]

More lies...

[doug]

Jerzy, PM me an address and I will post you a HBOL for the 300e FOC. I seem to have 2.

[forddeliveryboy]

 

Skip to 2m35

 

Get depressed.

 

Then https://mercedessource.com/store/search?keys=tilting%20sunroof

 

 

And for future reference and those who have still-working MB roofs, it's typical bloody Mercedes Benz.

 

[Jerzy Woking]

Success! Well, partially anyway. Drenched everything in Wurth HS2000 and WD40, watched the Moto3 race, then went back out. Gingerly turning the hex nut, it all began to move and the roof is now closed. And it will remain so, as looking at the video posted, it looks like a job to be done on a a long sunny day, with copious amounts tea, and lots of phone calls/internet questions. It seems like a problem with the motor/lubrication than a cable problem.

 

It was only after I removed all the trim panel that I saw it had a door in it for just this job! The HBOL was right. And replacement of said panel was simply the reverse of the removal-although I wish I had noticed the little hatch first.

 

And relax-just as it looks like it is going to piss down soon too.

 

Thanks for all your help-very much appreciated.