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In some cases, an off track window may be caused by a broken or worn out track. If areas in the track are rusted, apply a few drops of white lithium lubricant to them. If areas in the track are bent, try pressing them into shape using the back of a hammer, wrench, or other firm tool. If the track is rusted or bent to the point of being unusable, you will need to replace the window regulator and, most likely, the window motor. Depending on your car's make and model, replacement regulators typically cost between $190 and $270, not including a motor. If your window track uses glue to hold the glass in place, touch it to make sure it is still sticky. If the window track is dry, rough, or cracked, squeeze a layer of Automotive Goop or similar automotive adhesive into it. Over time, a bad window motor can cause the glass pane to stop moving, making it appear off track or causing it to fall out of alignment. Check the motor for any clear signs of damage, like dents or holes. If the device seems good, connect voltmeter wires to the motor's connector terminals. If the voltmeter reads between +12 and -12 volts, the window motor is in good working condition. If the motor seems fine but doesn't operate correctly, replace the associated fuse in the fuse box. If it still doesn't work, check the window control switch by connecting an ohmmeter to it and and looking for little to no resistance when the switch is pressed. Depending on your car's make and model, expect replacement motors to cost between $120 and $240, not including a regulator. In some cases, a stuck or off-track window may have been caused by a loose or faulty wire. Examine each wire inside the door for kinks, tears, and other forms of damage. If they look good, make sure they're fully connected to the window motor. If the wires are damaged or broken, you will need to replace them or, in some cases, the whole motor. Though not always available, model-specific replacement wires generally run between $15 and $50 dollars.
Examine the window track for wear. Add adhesive if your window track is dry or rough. Inspect the electric window motor with a voltmeter. Check for bad wire connections.