JonnyD

When I go to "Express Close" the sunroof, it goes about 1/4 of the way, and then re-opens again. Is it sticking on something? There doesn't seem to be anything visible in the tracks way.

Please advise if you can.

Thanks

dmatre

It's one of two problems:

1) need to re-synch your sunroof (search the W203 forum, or RTFM)
2) bad sunroof control module (in which case it needs to be replaced)

Check 1) first. If that doesn't work, then bend over and grab your ankles - it's gonna hurt . . . .

frox11

try lubricate the track

mine did the same thing once

jogger

i had the same issue and lubricated the rails and works fine now.

JonnyD

Lubricate with?

XsuperbeeX

Mine had a kinda diff prob... didnt wan to close at all... just leave it a coupe of days and i work again... haha

frox11

I think the benz dealership uses grease(they used it the 1st time I complained about it). Dunno what the part number is. Nowadays I just use my bicycle chain lube, the type that is safe for metal, plastics, etc. I like the bike chain lube better because it is a dry lube, does not collect dirt.

pmb600

If your car is under warranty just bring it in. They fixed it for me when mine was doing the same issue, I think it just need to be cleaned and lubricated.

holycaoAMG

+1

its definately gonna be your ONLY solutions for this. had the same problem and got solutions for the same things mentioned.

JonnyD

It's under warranty....I'm gonna take it in.

I lubed it with WD-40 and it worked for two passes and now it's sticking again. It gets right to about 3 inches from closing, and then it stops and re-opens.

billbugger

Mine does this as well. You can hold the button and it will close, but the 'express close' as you called it doesn't work for me either (closes 3/4 then opens back up).

It also does the same thing when i resynced the windows (holding lock down for like 10 seconds while pointing your key to the infrared port on your driver door handle).

It just hasn't really bothered me enough yet to drive across town to the dealer.

WaveyKat

Anyone got a Fix for the Sunroof Express Open/Close Feature? Mines Quit Working.. i cleaned, lube & sync it but still doesn't Express Open/Close? anyone have any clue? someone mention the "control module" where is this?

thanks!

EV0LVE

i have had this problem with my sunroof for a long time and the dealer cant fix it. what i do is just hold the close switch until it closes completely and release after so. at first i was furious, but now it's just like operating my honda, same thing.

goodluck, and let us know if you found a different solution

bdgdl08

The dealer should always be able to fix it, that's weird. I had the problem, but they lubed it and it works now as well. Who knows.

LILBENZ230

My car did this and no amount of lubrication or re-synch operations would fix it. The dealer ultimately adjusted something using SDS. It has worked fine since. This was October 2008.

SunnyRayToronto

Do NOT use WD-40,.... Arghhhh!

WD-40 has chemical cleaners in it that will weaken and destroy rubber,... like those rubber seals around your sunroof,.. that keeps the water out.


Use SILICONE lubricant spray! Saturate all moving mechanism and track on sunroof with it. Apply once or twice every year.

BTW, use Silicone lubricant spray on all your rubber seals to keep them flexible.

acr2001

THIS.

Also, WD-40 realistically is not a lubricant (by my standards). It's more of a cleaner. It evaporates within a few weeks as a lubricant.

Also, yes, the stop sensor (I forget the actual name) can be "re-learned" using SDS.

WaveyKat

hmm guess i will be going to my mechanic to get the SDS hooked up thanks guys!! man i need to buy one of those SDS machine :-D

LILBENZ230

Well I can't roll my eyes back far enough in my head to express myself properly on this.. but.. my car's sunroof starting the bouncing back ***** again this morning after working fine for a year following its SDS adjustment.

WTFever. I'll just hold the button.

AdidasC230

I literally got my car back today for the same issue, and they replaced some part called the sunroof "roller blind" which basically is the track the sunroof rides on, the mounts had snapped so there was excess pressure pushing on it while closing. It was like 15 bux in parts, from what I was told. I also had "sunshade shims" replaced, because the sunshade was free to fly open and closed with acceleration and braking, not that its related. But bring it in and have it fixed, If its not under warranty, let me know and ill get the part numbers off the service ticket and take pics of it.

WaveyKat

Please Post Part Numbers thanks :-)

anonymousmoose

No I know first hand why people I know hate sunroofs. Happening to me too. I tried the resync and no luck. I'll contact the dealer soon. Its also grinding a little bit so may need lube.

cmarcho

Mine was doing this and I sprayed the tracks with some lube that my garage door repair man gave me. He said this lube doesn't attract dust and lasts a long time. Don't know what it's called though, it's in a can on my garage shelf now.

My sunroof closes with one touch again.

gatonls

I was having this problem as well.........serched up RTFM like you said Bada Boom! Magic Thanks for the info.

Norwichdelta06

had the same issue... keep in mind theres a pinch sensor up there as well. I had to clear out a tiny tiny branch and now it works completely fine!