3 Common Causes of Power Window Failure

Having power operated car features is something we have all come to expect but what happens when one of those features fails? When your power windows fail, you might be stuck with a window that you cannot role up or down. If it ins already down and stuck, you really have a problem because now your car is exposed to potential damage and/or theft. But, it is also aggravating when your power window is broken, even if it is stuck in the ‘up’ position. And, sometimes your power windows might not be stuck but they might not be working smoothly or quickly like they are supposed to. When this occurs many car owners are left wondering what happened and what to do next.

3 Common Causes of Power Window Failure

Bad Power Window Motor

One of the most common reasons power windows fail is a broken motor. Fortunately, when this is the case it is very easy to tell because if you press then button to move the window up or down and nothing happens, the motor is not working as it should.

Broken Power Window Regulator

Another common cause of power window failure is a broken window regulator. The regulator is controlled by the motor so the motor may be working but the regulator is failing to actually move the window up or down, or you hear a noise but nothing happens, it is likely that your window regulator needs to be repaired or replaced. Also, ion the window moves very slowly or is drooping on one side, that is also likely caused by your window regulator.

Broken Power Window Switch

Your power window motor and regulator could be working fine but if your power window switch is not working, the motor will never receive the signal it needs to actually work. This is a very common reason for power windows to fail and you simply need to have your power window switch replaced.

How to fix faulty power windows

Broken power windows can prove to be a hassle, especially in hot or cold weather. Such problems are common in late-model cars because of their outdated mechanism and electrical components. Fortunately, power window repairs can be performed in a few minutes. The diagnosis and troubleshooting are also a straightforward process.

The mechanism of power window is basic in all terms. It comprises a regulator mechanism similar to other components. Then there is a lot of racks and cable drives that provides motion of window panels. Therefore, these components are susceptible to problems quite often. Such issues are caused by wear and damaged parts from accidents.

First, if car owners cannot move any one of their windows, then this might be a fuse problem. Since window regulators are high-current devices, age and damaged panels can cause a fuse to get blown. If a fuse is intact and the window won’t move, then there is a mechanical problem.
At this point, diagnosis helps to narrow down electrical problems such as blown fuses. A car’s electrical system consists of a voltmeter and 12v test light. Then, start the fuse panel and follow the switch wire. This step is essential to find corroded connectors interrupted by voltage problems.

Then, access the inside of a switch panel. On vehicles, one can find panels by prying up the panel and back probe connectors. However, other models require complete disassembly of the door panel by removing variety of fasteners. The perimeter of panels will also contain fragile stubs. These are intended for one-time use and needs to be replaced later.

As a step to check electrical problems, use jumper wires connected to the battery terminals. Make sure that a chosen regulators supply 12v, so switch the ground side of circuits. In some cases, technicians will also replace the trace wires to repair severe misalignments caused by loose fasteners.

After performing all repair measures, ensure replacing the gaskets and seals. These components keep wind noise and rain out from entering interiors. For late-model cars, misplaced or torn gaskets can also prevent proper operation. Use a super weatherstrip adhesive tape to regulate gaskets into place.

For damaged gaskets, people can use super glue materials to repair tears. It will even repair a loose corner of seals. As a precautionary step, clean the surface of gaskets to prevent water from flooding the internal drainage system. Once finished, lubricate the channels with silicone sprays or protectants for proper power window functioning.