Why does my power window only work sometimes?

Why does my power window only work sometimes?

If only one window stops working, the problem could be a bad relay, fuse issue, bad motor, or the power window switch has failed. The most common reason for one window to stop working is the switch, so this should be looked at by a professional mechanic to have your power window switch replaced.

What causes power windows to stop working?

Another possible electrical problem that keeps your power windows from working is a faulty window switch. If the switch itself stops working, even if power is getting to the window motor, and the window motor is in good shape, but the window still doesn’t respond to the switch, the switch itself might be bad.

Does each car window have a fuse?

Check the fuse With some arrangements a single fuse in the main supply line is used to protect the complete window system so a failure here affects all the windows. Other cars have individual fuses for each window motor so failure will only affect the one window.

How long should a window regulator last?

How long should a window regulator last? Recommended Services. Assuming an “average” number of uses, the normal service life of ANY power window motor and assembly will well exceed the value of 2 years and by orders of magnitude.

What does a car window relay do?

For instance, if the driver presses his window switch, the door module closes a relay that provides power to the window motor. If the driver presses the switch to adjust the passenger-side mirror, the driver’s door module sends a packet of data onto the communication bus of the car.

How much is a fuse for a car window?

The cost to have a fuse replaced depends on the style of fuse used in the make and model, and the power requirement. Most common fuses are only $10 to $20, although some specialty fuses are more than $100 to replace, in addition to diagnostic costs.

What is a car window regulator?

What is a Power Window Regulator? Power windows run on a switch-activated motor inside the car door. The power window regulator feeds the window glass up through two channels on either side of the door, and the drive mechanism is designed to operate in a precise range of motion.

How can you tell if a window switch is bad?

To test the window switch you will need to use a voltmeter and ohmmeter.

1. Remove the faulty window switch from the door.
2. Turn the switch to the “open” position.
3. Attach the voltmeter to the switch plug and test to see if there are 12 volts coming from terminal 4 to the ground and from terminal 5 to the ground.

Is a window motor and regulator the same thing?

The window motor is the electronic motor with a gear on the end. The regulator is attached to the window and moves the window up and down as it is driven by the motor. In most cases they can be bought together as one assembly for easier replacement.