Window Regulators

How to Diagnose and Replace a Isuzu Window Regulator


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If you find your car windows are not moving up or down and seem to be stuck in one position, it's possible there's a problem with your Isuzu window regulator. The window regulator is the system responsible for relaying your commands to the windows themselves and moving them up or down. Most Isuzu vehicles have automatic window regulator systems that are controlled by electrical circuits. Some older vehicles have mechanical circuits. The older models of the Isuzu Rodeo window regulator, for instance, are operated by gears turning in the inside of your door as you maneuver a knob on the interior of the car door. Most cars today will need to be subjected to Isuzu automatic window repair should their window regulators fail.

Step 1 -- Gather Up the Necessary Tools

Before you begin your diagnosis and replacement project, you'll need to collect together the following tools:

  • Screwdrivers of various sizes
  • Prying tool
  • Volt meter
  • Replacement regulator that matches the one that is in your vehicle now

Step 2 -- Diagnose the Problem

Begin by checking each window to see if it works. If some windows work but not others, it's likely you do not have a blown circuit or fuse. For any windows that don't work in your Isuzu, press the window control switch and listen for any motor sounds. If you hear a sound, it could mean the system is functional but that a piece has become dislodged.

Step 3 -- Open up the Car Door Panel

The next step is to open up the car door panel so you can see the system itself. Isuzu vehicles have a series of carefully hidden screws on the inside of the plastic paneling that covers the metal car door itself and on the interior of your vehicle. Using screwdrivers of various sizes, locate these screws and remove them for the front driver-side door panel only. Collect the screws and keep them separate so you're sure which one is which.

Use the prying tool to carefully remove the plastic paneling of the door from the door itself. Set that aside carefully.

Step 4 -- Check the System Visually

Next, conduct a visual check of the system itself. Look for signs of damaged wires or other components, or for signs of any pieces that may have become disconnected. Use a volt meter to check there is electrical current flowing through the circuit. Provided there is, you may need to replace the regulator motor.

Step 5 -- Replace the Existing Regulator

The regulator is connected to the door of your car by two sturdy bolts. Remove those and then carefully disconnect the regulator, being sure there is no power flowing through the system before you do.

Follow the instructions on the replacement regulator to assemble and connect it to the car door and the vehicle's electrical system. If you have any questions, consult with a mechanic.

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