0utlier

The sunroof motor runs a few seconds after the sunroof is all the way back. Is this normal? It has done this from the day I've owned the car and I keep forgetting to ask if this is normal. Thanks.

Ed Hughes

Subscribing to this thread, mine is the same.

the flyin' scotsman

Is the switch sticking? My drivers window switch sticks, perf down.

Ed Hughes

No, its the "express mode".

the flyin' scotsman

The '91s have express sunroofs.............never knew.

I wish I could delete mine totally, never open it and it takes up precious head room.

0utlier

My 90 s4 is express as well. One touch and it goes back, but once it fully opens the motor still runs for a couple of seconds. The switch is not sticking.

Randy V

Mine too.

I hit the switch again briefly and it turns off.

the flyin' scotsman

The switch controls were changed in '90



Doesn't answer the question though.

0utlier

Since there's three of us that this happens to I'm thinking a better question might be does this NOT happen to anyone with a 1990 or newer car.

928ntslow

Doesn't happen on my GTS. The sunroof motor and gear crank mechnism are joined by a non direct drive coupling. This is done for obvious reasons. Chances are, if the motor is still turning, the rubber coupling has gotten loose so the shaft turns inside of the coupling. This is my guess based on your explanation of the problem.

aggravation

Does anyone know if the '88 could be upgraded to the '90 version by just switching out the module or is there more to it than that?

the flyin' scotsman

I was wondering that also.............see my previous post with the excerpt from the '90 Technik Service Information.

borland

On my 90' S4, the motor runs until I hit the sunroof switch again (express mode). I think the controller is supposed to sense the sunroof is fully open and then shut off the motor.

But I have never let it run for a few seconds. I just assumed the sunroof transmission was worn enough that the controller doesn't sense an increase in current at the motor. Maybe I should let it run longer and see if it shuts off.

I did take the cover off and see that the motor drives the transmission, so it's not the coupling that's slipping.

steaditim

this will sometimes happen to my '90GT. When it does, I tap the switch when I hear the motor continuing to run after the sunroof is open. If I don't hit the switch, you can definitely smell something working too hard. The fact that this happens sometimes, suggests to me that there is a sensor somewhere

69gaugeman

I have develpoed a controller that does just that. It is still in field trial (3 in the field now). I should have 6 field trial going by the end of the month. Then send the other who have already paid theirs, then start production

See this window controller thread