Grinds, rattles or stalls under a heavy panel
Drive motor · cables · guides · X3 & X5How it shows up
A grinding or scraping noise as the front panel slides, a panel that stops halfway, or one that closes further on one side and leaves a gap at a corner. Sometimes it tilts but won't slide. Sometimes the motor clicks once and gives up. On the bigger X5 roof the panel is heavy enough that a tired motor simply stalls. On the X1 and the older cars, a rattle from the closed panel over bumps is the same guide wear showing up early.
Why it gets misread
The motor gets replaced for what is a worn guide or a stretched cable, and the new motor grinds on the same jam a month later. The other common misread is a complete sunroof cassette quoted for a roof that needs guides cleaned, a cable renewed and the panel re-aligned.
How we fix it
Headlining down, the motor tested, the guides cleaned or renewed, the cables checked for stretch, the panel aligned and the roof taught its open and closed positions again. If the motor has genuinely failed, it is replaced on its own, and we stock the common ones so the car isn't waiting. Cycled a dozen times and water-tested before it goes home. Covered by our parts & labour warranty, and if the roof ever misbehaves after, you call us first.