What causes the sunroof to not close and automatically bounce back?

[VanDaisy]

The reasons why the sunroof cannot close are as follows: Sunroof motor jammed or damaged: In this case, it is necessary to check the control circuit of the sunroof motor. If the control circuit is normal, a new sunroof motor needs to be replaced, and then the sunroof motor matching reset should be performed. Sunroof sliding rail deformation: In this situation, it is necessary to go to a repair shop to check the degree of deformation of the sliding rail to see if it can be repaired. If the deformation is particularly severe, the sunroof sliding rail needs to be replaced. Sunroof control panel failure: The sunroof does not work due to a short circuit or poor connection in the integrated circuit board inside the sunroof control panel. In this case, the sunroof control panel needs to be disassembled and inspected.

[GiselleRose]

Last time my sunroof also kept bouncing back like crazy. After struggling for a while, I found a small stone stuck in the sliding rail. The mechanic said accumulated leaves and dirt create too much resistance, making the anti-pinch function mistake it for an obstacle and retract. Another possibility is deformed rails or aged rubber seals causing uneven closing that triggers the safety mechanism. The worst case is when the motor gears slip - you hear clicking noises during closure but it just won't shut properly. For emergency fixes, vacuum the tracks first and temporarily seal gaps with clear tape to prevent rain leakage. But for a permanent solution, you'll need to visit the shop. Have technicians remove the headliner to inspect wiring, and apply specialized lubricant to the rails while they're at it.

[McHannah]

I've encountered this issue twice! The first time was when sand got into the sliding tracks during a beach trip, causing the sunroof to bounce back at 80% closure. Later, I used WD-40 on the tracks but ended up disabling the anti-pinch sensor. Actually, neutral grease is best for sunroof tracks – high viscosity grease just accumulates dust. The second time, the rubber seal deformed from sun exposure, causing the sealing strip to press against the window frame during closing, triggering the anti-pinch system by mistake. Now I've made it a weekly routine to clean the tracks with alcohol-dipped cotton swabs for the sensor grooves, followed by a light application of track oil. My advice: avoid opening sunroofs in dusty areas, and remember to use an air gun to blow out track gaps during car washes.

[JoelRose]

The sunroof's automatic anti-pinch function acted up. The other day, it suddenly retracted while closing, giving me a scare. The manual says the protection activates when the system detects 5N of resistance. I tried resetting the system: turning the key to the ignition position, holding the open button for 30 seconds, then immediately holding the close button. During the reset, it made a clicking noise. I suspect rainwater seeped into the control module, causing poor contact. The repair shop found that the bracket's locating pin was worn, causing the glass to tilt at an angle during closing and triggering the protection. Now, I get nervous every time it rains and quickly bought a car cover online as a backup. I recommend everyone get their sunroof serviced before the rainy season—even a business card stuck in the track can cause a malfunction.