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General E46 Forum
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Old 01-15-2017, 06:17 PM   #1
brettc
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Join Date: Jan 2017
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My Ride: 2001 330i
Sunroof motor or switch

My 2001 330i with 101K has a sunroof issue. The one touch is not working and the sunroof will open and close only by repeatedly pushing the switch. Each push of the switch moves it about an inch in the desired direction. I checked the rails and everything appears clear and there are no odd noises. I have search the forums- lots of info on sunroofs, but I could not find this specific issue. Any assistance is greatly appreciated. Thank you.
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Old Yesterday, 03:43 PM   #2
brettc
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Bump

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Old Yesterday, 10:52 PM   #3
lmr2wil
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My Ride: '00 328Ci
Does it move smoothly when using the allen key in the trunk to manually turn the motor?

Luke
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Old Yesterday, 11:18 PM   #4
brettc
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I have not tried the Allen wrench as I can use the motor and switch to open and closer the sunroof albeit one inch at a time.

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Old Yesterday, 11:49 PM   #5
lmr2wil
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Quote:
Originally Posted by brettc View Post
I have not tried the Allen wrench as I can use the motor and switch to open and closer the sunroof albeit one inch at a time.

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For sure...

Even still, the sunroof module measures mechanical resistance against a preset curve to decide if the system is jammed / someone's fingers are in the way. Others can correct me if I am wrong, but it sounds like your module may be initiating this anti-trap feature (which can be overridden with the switch). So, as a baseline, I would want to see whether the module is actually sensing a drag or not. You should be able to tell this based on how easily the allen key moves the sunroof within the cassette. From there, it should be a matter of finding the drag (if it is present) or reinitializing / resetting the module appropriately.

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