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How to Diagnose and Replace a Nissan Window Regulator
If the windows in your car appear to not function properly, it is possible there is something wrong with your Nissan window regulator. A window regulator is what controls the movement of the windows up or down in your car. If the regulator is not working correctly, you will not be able to move the windows, no matter whether you have an automatic or a mechanical system. Most updated vehicles use an electrical system to control the windows, but some older Nissan cars are operated by gears that are controlled by a manual turn knob. The Altima window regulator, for instance, mostly is manual. Whatever the case, if your windows are stuck, it means you’ll need to diagnose the problem and execute a Nissan automatic window repair.
Step 1 — Gather the Appropriate Materials
Begin by collecting the tools and materials you’ll need for the project:
- Screwdrivers of different sizes
- Prying tool
- Volt meter
- Replacement window regulator that matches the one in the car already
Step 2 — Diagnose the Problem
You can tell a lot about the window regulator problem simply by testing a few things out. Check to see if all of the windows are broken. If so, it’s likely there’s a circuit connection problem or a blown fuse in the regulator motor. If some of the windows work and not others, listen carefully for sounds of a motor working as you attempt to move the windows that are broken. If you hear the motor, it’s likely some piece has come out of alignment but the motor itself is still functioning.
Step 3 — Open the Car Door Panel
If you need to replace the window regulator, you’ll have to access it first. Use screwdrivers to unscrew all of the different screws that hold the plastic car door panel into place on the metal car door. These can be well hidden, so take your time to look on the inside of the door. Collect the screws in a separate location.
Use the prying tool to gently remove the plastic car door panel. Lay it carefully down away from where you’re working.
Step 4 — Diagnose and Replace the Regulator
Visually inspect the regulator system to see if you notice any signs of damage or a broken connection. Before you work, test to make sure the electrical current is flowing to the system. When you work on the regulator, however, be careful the power to the vehicle is off, so that there’s no risk of electrocution.
Remove the bolts that connect the regulator to the inside of the car door. Check to make sure you have the same type of regulator, then follow the installation instructions on the new model to replace the old or broken regulator carefully. Test it before you place the car door panel back on the door.
If you have any questions, consult with a mechanic or another professional.
