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For vehicle owners with power windows, a problem with windows moving very slowly can be more than a mere annoyance. It could signal an issue that could worsen with time, possibly even resulting in a window stuck in either the up or down position.
The way your power window system works is actually simpler than you may suspect. Your window system motor receives power through wiring, which is regulated by a fuse. When you press the window switch from inside your vehicle, it produces rotation at the motor. At that point, the regulator inside the clutch of your power window system converts that rotation into the vertical movement of your window. When certain parts within this system begin to wear, it can cause your window to move slower than it should.
Faulty window motor: Window motors tend to wear down with age and may even create a slower rotation when they begin to go out. The window moving up or down slowly may be the only indication of this problem, or the motor may also make a labored whirring sound when it is in operation.
Worn window regulator: When the regulator starts to have signs of wear, it can cause your window to move up and down at a slower rate than usual. Unfortunately, without the proper diagnostic tools and the removal of the door panel, it is difficult to determine whether the motor or the regulator is at the root of the problem. Allow a professional mechanic to perform a thorough inspection.
Broken window track guides: The window track guides keep the window properly in place as it goes up and down. When a track guide breaks, it can cause resistance on the window’s path, which will manifest in the window moving up and down slower than normal and possibly be accompanied by a rattling or grinding noise. Eventually, a broken guide can result in the window falling inside your door.
A top-rated mobile mechanic will come to your home or office to determine why the window is moving so slowly. The mechanic will need to remove the door panel for a closer look at the components of the power window system, and will identify it as an electrical issue (such as a bad motor or regulator) or a mechanical issue (such as a worn or broken guide track or track strip).
After the inspection, the mechanic will provide a detailed report that describes the source and cause of the window movement problem, along with the scope and cost of the necessary repairs.
Since your window moving slowly doesn’t affect the drivability of your vehicle, it can be tempting to put off its repair for a later date. In the meantime, however, whatever component is at the root of the issue could potentially damage other parts of the power window system. Ultimately, this could increase the cost of repairs at a later date.
Keep in mind also that the issue could cause the window to suddenly stop working at any point, and while being stuck closed is a mere annoyance, being stuck open creates a large security and safety issue for you not to mention the trouble that bad weather will bring you. Get it diagnosed as soon as possible.