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Sunroof troubleshooting

Condition

Cause

Correction

Rattling noise Poorly adjusted roof lid Adjust roof lid
Excess play in slides or guide pins See Service Bulletin 54 01 84 (298)
Water drain connector knocking on rail Tape over rivets on rail
Guide tubes vibrating against each other Tape guide tubes
Liner frame hitting lid when open Install foam rubber on corners of frame.
Roof raises but does not slide Pins bent on gate holders Replace gate holders
Water leaking through roof Poorly adjusted roof Adjust roof lid
Damaged or loose seals Replace seals
Drain hoses plugged Clean drain hoses
Incorrect seals fitted Check for correct orientation of seals
Rails and cover plates not sealed against body Remove rails and seal mating surface
Grinding noise on open or close No lubrication on rails Apply grease to all moving parts
Grinding noise on raising roof Front seal dry Lubricate with Vaseline or equivalent
Too much pressure on front seal Adjust roof lid
Roof lifts unevenly Drive cables out of adjustment Adjust cables
Cable no longer secured in guide Squeeze guides onto cables to secure
Whistling noise from closed roof Poorly adjusted roof Adjust roof lid
Electric drive motor does not run Blown fuse Replace fuse
Motor defective Replace motor
Switch defective Replace switch
Wire harness defective Locate and repair break
Roof does not lift Defective relay Replace relay
Poor adjustment of roof Adjust roof lid
Sunroof goes past closed, to lift, without stopping Microswitch defective Replace microswitch
Motor runs but roof does not move Insufficient contact force on drive clutch Adjust clutch
 

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E30 M3 Repair Manual V2.7.  Copyright ©1999-2001 Koala Motorsport & Brett Anderson