What causes the window lifting failure of Trumpchi GS4?

[StKiara]

Generally speaking, the failure of the window lifting function in the Trumpchi GS4 may be caused by issues such as a faulty window lift switch, a malfunctioning window regulator, or wiring problems. Here are the solutions for uncontrollable windows: Check the circuit diagram: There is a button on the master control that prevents the windows from lifting. When pressed, the other three windows cannot be raised or lowered, as it cuts off the circuit to their respective window lift motors. Pressing this button once cuts the power, and pressing it again restores power. Change the current direction: After turning on the ignition switch, the contacts of the door window relay close, connecting the power window circuit to the power source. When the combination switch or individual switch is set to the "up" position, current flows through the window motor, causing it to rotate and drive the regulator to lift the window glass. When the switch is set to the "down" position, the current direction through the window motor reverses, changing the motor's rotation direction, and the regulator lowers the window glass. When the window glass reaches the top or bottom, the circuit breaker switch cuts off for a period before restoring to the connected state.

[LaJoseph]

I've encountered quite a few window lift issues with the Trumpchi GS4, and many friends have asked about them. The most common problem is poor contact inside the window lift switch. Over time, the contacts oxidize or get moisture inside, making the switch unresponsive unless you press hard or repeatedly. Another issue is the window lift motor failing—either the carbon brushes inside wear out after prolonged use or the motor itself burns out, causing the window to get stuck or move very slowly. Additionally, excessive dust and dirt buildup in the guide rails or sliding channels can increase resistance, making the window stick or jam while moving. Loose or corroded wiring harness connectors can also lead to poor contact and malfunction. From my own experience, I’ve learned to listen for the motor humming when operating the window. If there's sound but the glass doesn’t move, it’s likely stuck or the cables are damaged. If there’s no sound at all, the problem could be with the switch, fuse, or motor circuit. Avoid forcing it open, especially by reaching into the window gap, as you might get pinched.

[RyleeLee]

Regarding the window malfunction issue with the Trumpchi GS4, based on my usual observations, it mainly concentrates on several areas. The window switch assembly is a common failure point – prolonged use can lead to contact wear or dust accumulation, causing signal transmission failure, which manifests as a completely unresponsive window button or intermittent functionality. Then there's the aging of the window regulator motor, especially in vehicles that have been driven for seven to eight years or over 100,000 kilometers. The motor's operation sound becomes strained, producing a dull noise. If the rubber seals on the glass guide rails age, deform, or accumulate too much dirt and leaves, it can also cause the glass to move unsmoothly or even get stuck. On the electrical side, loose or corroded wiring harness connectors connected to the motor, or repeated bending of wires at the door hinge area, may lead to exposed wires and short circuits. Oh, and don’t forget to check if the corresponding fuse in the fuse box has blown – this is the simplest fix, and you can even try replacing it yourself to see if it works.

[VonIsabela]

The power window malfunction in the Trumpchi GS4 became clear after disassembling the components. The window lift motor is crucial—excessive wear of its carbon brushes or bearings leads to insufficient torque, making it unable to lift the glass. If the tracks and channels inside the door become deformed or lack lubricant, causing dry friction, the increased resistance can trigger the anti-pinch function. Burned-out or water-shorted film circuit boards inside the control switch can completely disrupt the signal, leaving the window unresponsive despite pressing the switch. While control module failures are rare, they can't be entirely ruled out. Additionally, prolonged bending fatigue at the door hinge can cause the wiring harness to fray and short-circuit. Later, I replaced the motor myself and noticed the original motor's protective coating aged quickly. After installing a new part and applying specialized track lubricant, the window now operates much more smoothly.

[SanDelaney]

As a GAC Motor owner, I believe that addressing power window failure should prioritize convenience and safety. A completely unresponsive window is definitely frustrating, especially when sudden weather changes make it impossible to close. If the switch works intermittently, you might manage temporarily, but if there's no response at all, the first step should be to check the fuse, located in the small box on the left side of the driver's dashboard—usually, the manual indicates its exact position. If the window suddenly won't close while you're out, try gently tapping the inner door panel or armrest area; sometimes, this can loosen the jam and allow temporary closure before getting it fixed. Never attempt to stick your head or arm out if the window won't rise—getting trapped is dangerous. If the motor or cable is jammed and making unusual noises, it's best to stop operating it to avoid worsening the issue, which could lead to the glass completely detaching.

[OJosiah]

My experience driving the GAC GS4 over the past few years has shown that preventing window regulator failures is truly effective. Don't underestimate the dust, leaves, and mud in the door gaps—regular cleaning can significantly reduce window sticking issues. When washing the car, avoid using a high-pressure water jet directly on the seals and door tracks, as moisture ingress can lead to rust on the tracks or dampness in the motor. Also, don't use excessive force when pressing the window switches. Sometimes, the switch surface may look fine, but the contacts underneath could be oxidized—try spraying some specialized contact cleaner. If you notice the window moving noticeably slower or the sound becoming muffled, these are warning signs. At this point, applying some specialized silicone-based window lubricant to the regulator tracks (never use engine oil or grease, as they attract dust or corrode rubber seals) can effectively slow down further deterioration. The earlier you address any abnormalities, the more likely you can resolve them with simple maintenance, saving the cost of replacing the entire window regulator system.