Greetings,

Out of the blue my sunroof will not open on my 1992 400E.
Does anyone have a clue where I should start to troubleshoot before bringing it to a shop?

Can you hear or see anything attempting to move? Check the fuse. If it acts like it is binding don't force it. Don't want to scare you but the most common problem is one of the guides break. Parts and labor get pretty pricy after that.

__________________
Scott Diener
89 300E
93 300E
92 Volvo 740 Wagon aka "Mutt mover"

Scott,

I don't hear nothing or see the roof even attempting to slide. As for the fuse, where would it be located?

Fuse box is here:



The fuse location will be on the inside cover of the fuse box.

Check out fuse and it was fried. Replace fuse turn on car and the new fuse was fried. Took the car to a mechanic and he believes there is a wiring problem. Has this ever happen to anyone out there? Well I'm going to wait till my 120k service to have it checked out. I can live without the sunroof for now. Thanks for your replies.

MATTD

My sunroof went haywire at 115,000mi. It would open and close on its own. And it would never stay open for more than a minute. I just pulled the fuse and kept it that way. I knew the fix would be expensive and it's really not worth it for me.

Unfortunately the fuse for the sun roof is the same fuse for the rear head rest. Yeah, I had accidentally pulled my headrest up and they will not go down. I'm guessing they are electronically operational and not at all manual.

Oh well, I can live without that (mini) sunroof, but the rear head rest is another issue.

I have 116k on my 92 400E and I Love Her. I will wait till I have to take her in for the 120k before I get any work done.

I do have another question does anyone have an idea has to how many miles the 400e will probably get me, considering keeping the car maintenance fit?

One more question, I have had the powersteering pump resealed about 6 months ago howwever, my power steering level has dropped to the minimum level. I see no leaking in my gararge or parking spaces. Just curious..

Good pic NoDub.

mattd,
Well, hopefully the elect. fix won't be as expensive as broken sunroof parts

__________________
Scott Diener
89 300E
93 300E
92 Volvo 740 Wagon aka "Mutt mover"

The rear headrests are partial electric and partial vacuum controlled.

mattd,
Maybe you can spot a cause for the short near the switch (take out the front courtesy light) or motor in the trunk (behind the left upholstery panel)...

NoDubs,
Have you ever tried to change the switch?

greetingz,

__________________
1990 300SL-24
1993 C250D with a minor 600+k kilometer
www.MBenzNL.com(the Netherlands)

MBenz

I will try your recommendation to take out the front courtesy light. Is it just a pullout or do I have to unscrew it out. I will figure this out. And if not I will check the motor in the trunk.

Thanks

NoDubs
I am a computer geek but I'm willing to try my mechanical skills. Any recommendations for changing the switch. Hopefully it's a no-brainer.

Thanks


MATTD

mattd,

The front courtesy light is a non bolted light and can easily be taken out. If the courtesy light gives you a hard time to get it out, you might have to push two chrome clips (with a little screwdriver) that you can see at the upper side of the light (holding it tight in the upholstery.

greetingz,

__________________
1990 300SL-24
1993 C250D with a minor 600+k kilometer
www.MBenzNL.com(the Netherlands)

I have no clue on how to fix the switch. I really have no interest in fixing the sunroof, so I haven't given it much thought. Sorry.