Window Regulator

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Window Regulator at 1A Auto

What is a window regulator?

A window regulator is a mechanical part located behind the door panel that raises and lowers the window of a car door, and can be either manual or electric. When you have electric windows, you will need an electric window regulator which connects to a motor. A manual window regulator operates utilizing a hand crank. 

How do I know if my window regulator needs to be replaced?

Your window regulator may need to be replaced for a variety of reasons:


  • Damaged Window Track – A damaged window track can make it hard for your regulator to lift the window, and it will eventually fall in the door and stop working altogether.
  • Worn or Compromised Weatherstripping – Sometimes rain, snow, ice, dirt, and debris can get inside your door and destroy the parts inside.
  • Misaligned Window – Like a damaged window track, regulators were designed to lift and lower windows in their appropriate spots! A misaligned window puts more pressure on the regulator and may prevent the window from moving up or down.
  • Misplaced Window Stops – Window stops keep the window glass in place. If they’re misaligned, the window is bound to fall off the window track.
  • Obstructions in the Windows or Doors – Objects that don’t belong in the door can lead to an eventual malfunction if it interferes with the regulator.
  • Weakened Balance Springs – Your balance springs help balance the weight of the window. Door windows are surprisingly heavy; without springs, your window is bound to transfer that weight to the regulator, which isn’t good for your window motor.
  • Ground Wiring Fault – A ground wiring fault can lead to a lack of energy needed to operate the power window regulator motor. If the ground is partly damaged, this can lead to it finding a path of least resistance, which might cause the window to work intermittingly.


Why is my car window closing crooked?

Your car window could be closing crooked for a number of reasons. For manual window regulators, sometimes the wheels wear out, causing the window to slip over time. For power window regulators, sometimes the motor has worn out, the window has fallen out of the brackets, or there’s a problem with the window track.

Why does my car window click and not go down?

If your car window clicks and will not go down, you most likely have a relay issue. Sometimes power from the switch to the motor relay can fail, creating a clicking sound. Other times it can be from a blown fuse or a bad window motor.

Why won’t my car window roll down or up?

If your car window won’t roll up or down, the window crank could be spinning freely. You can fix this problem with a new clip. If not, checking for buildup in the window track and the cables. You might have to remove the regulator. Check for wear on the wheels or if the pulley’s steel wires are tangled.

If you have power windows, you can diagnose the problem with a test light. A test light will tell you if there’s any electric current in the window motor or switch. To do this, you simply ground the test light, turn the vehicle on to accessory mode, and probe a piece of metal on the wiring harness. If the test light illuminates, there is power to the switch; if the test light fails to illuminate, you’ll want to check for gaps or rips in any of the wires, and, if that’s not the issue, you might have a blown fuse. Then trace the wires to the power window switch. Probe the wiring harness, and flick the window switch. As you do this, the test light should turn on and off in coordination with the switch. Lastly, probe the wire directly connected to the window motor. If the test light illuminates, you’ll know that there’s power going into and out of the switch, and that, barring the cable wires are intact and the window is bolted to the regulator, the problem is with the window motor.

For both manual and power window regulators, sometimes the window has just fallen off the window frame. In other cases, it could be from a defective window motor or switch, a snapped cable wire, a worn out regulator, or a faulty crank. There are ways to test for each, and this process usually requires the removal of the door panel, which is doable for the average DIYer on most models. If your window is stuck, we do not recommend moving it by hand.

How long do window regulators last?

Window regulators are some of the most actively used parts in any vehicle. They will rarely last the life of a car, and much of their lifetime depends on how often you adjust your window. Signs of a window regulator slowing down usually include not rolling down all the way or rolling down slower than usual. But, as with any mechanical item, there are things that you can do to extend its life before any dramatic failure happens.

Can I replace a window regulator myself?

In most cases, yes, the average DIYer can replace the window regulator. Power window regulators typically consist of removing the door panel, disconnecting the power window switch, disconnecting the window motor lead, removing the window, removing the regulator’s bolts, and pulling the regulator out of the door. When reinstalling, be sure to test the regulator by hooking up the wiring harness to the power window switch before reinstalling the door panel. For some regulators, you might have to reset the auto-pinch feature.

Manual window regulators typically consist of removing the window crank handle, removing the door panel, punching or drilling out the regulators, or loosening the bolts that attach it to the door and window track.

How much does it cost to replace a window regulator?

A new window regulator can cost up $100, depending on your make and model, and labor costs can range from $200 to $400, depending on how many windows you’re fixing. Some places have quoted up to $500 or more with labor included for a single window.

Need a window regulator replacement?

1A Auto carries window regulators that come preassembled, have been built to quality control standards, and have been tested and rated for 10,000 cycles.

1A Auto Window Regulator Features:


  • Brand new
  • Pre-assembled
  • Direct bolt-on replacement
  • Built to quality control standards
  • Often improved design for durability
  • Per item warranty included


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