Cause of Left Front Window Malfunction in Excelle?
2 Answers
Cause of Left Front Window Malfunction in Excelle is due to poor button contact, failure of the button to reset, causing the lifting device motor to continue running, or high temperature and wear of the carbon brush leading to poor contact. Here are some related extended information: 1. Principle: The car window lifter uses a permanent magnet DC motor to drive a small pulley, which is wound with steel wire. Controlling the forward and reverse rotation of the motor controls the window's lifting and lowering. 2. Damage mechanism: It may be due to occasional button failure, causing the window to reach the top but the motor still not releasing, keeping the steel wire rope under tension. Over time, the steel wire rope becomes frayed and unable to operate.
My Buick Excelle's left front window also had issues, either not rolling up or getting stuck, which was really annoying. Last time during rain, it suddenly dropped while driving, almost soaking the seats. At the repair shop, the mechanic said it might be due to the aging of the window regulator motor, as the Excelle tends to develop metal fatigue or gear wear over time. Or it could be poor contact in the switch button, where dust buildup affects conductivity. I suggest first checking the left front window fuse in the fuse box—if it's blown, try replacing it. If that doesn’t work, it might be a short circuit in the wiring, as loose connections can cause unstable current. Too much dirt on the tracks can also cause sticking—spray some WD-40 for lubrication. After fixing it, the window rolled smoothly, and regular cleaning of the tracks can prevent future issues. The Excelle's window system isn’t overly complex, so repairs aren’t expensive, and addressing it promptly avoids distractions while driving.
