How to Fix Power Windows

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Finding your car windows stuck in a raised or lowered position is a nuisance. No one wants to be in a situation where they are desperately trying to manually push or pull the window. The once convenient drive-throughs would become a nightmare scenario. Rainy days would start being less special and more painful if the car window stubbornly remains dropped.

A standard power window relies on a straightforward regulator mechanism. One can effortlessly navigate through it with little technical knowledge and basic tools. This article will guide you in figuring out the source of the failure. Depending on the make of your vehicle, the exact process of repairing a stuck window can vary. However, you can use these basic steps, applicable for most cars, to fix your car windows:

Blown Fuse

A blown fuse may have caused all the windows to be stuck. You can diagnose this issue by repeatedly trying to press the switches to see if any of the windows move in either up or down position. Locate the fuse box by referring to the owner’s manual. If you have an automotive light test device, you can identify the faulty fuse. Replace the defective one with a new fuse, which is readily available at your local automotive shop.

If you are having difficulty identifying the power window circuit, refer to the owner’s manual and locate the corresponding numbered fuse. You must replace the fuse with the exact ampacity rating. If the new fuse also immediately blows then there is a short wiring problem that requires timely repair.

The Switch Panel

The switch panel is used to raise or lower the car windows. Loosen the fastens around the panel to check if the motor connector is working effectively. Use a voltmeter to monitor the read the motor’s power input and output. While the car ignition is on, push the switch buttons to see the voltmeter readings. A working panel and motor will give the reading from plus 12 volts to minus 12 volts.

This will provide a better view of if the window switch is receiving enough power and how much power is coming out. If power is not coming out of the panel, simply replace the switch. However, if the voltmeter shows no power reading going to the panel, then that means an elaborate electrical issue that should be handled by a professional.

The Regulator Assembly

Depletion in window regulators is a common source for faulty windows. A regulator mechanism may use a steel cable to raise and lower the window. If the steel cable breaks or bends due to rust, the entire window regulator needs to be replaced. Some regulator assembly uses plastic chains and strips to move the window tie. Over time the plastic drive can crack or break due to extra pressure from the motor. This issue would also require a regulator assembly replacement.

You can consider a professional to change your regulator mechanism or try it by yourself. Firstly, you would need to expose the regulator hidden behind the door casing. You can then unscrew the old regulator and wiggle it off. Install the new assembly through the same opening and screw the bolts in their corresponding positions. Do not forget to reconnect the motor to the switch panel and other window-based electrical connections.

 

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