Toyota Highlander Auto Windows Not Working: Causes and How to Reset

When driving a Toyota Highlander, one of the essential features is the automatic windows, which provide convenience and comfort for passengers. However, when the auto windows stop working, it can be frustrating and inconvenient.

The most common cause of Toyota Highlander auto windows not working is a fault in the window control switch. To reset the window, you have first to disconnect the car battery for about five minutes. Then, reconnect the battery and use the window switch to reset the window.

In this guide, we will discuss Toyota Highlander auto windows not working: causes and how to reset.

Table of Contents

Understand the Mechanism of the Auto Windows in Toyota Highlander

The auto windows in a Toyota Highlander work through a combination of electrical and mechanical systems. When the driver presses the window button, an electrical signal is sent to a power window motor, which turns a regulator to move the window up or down.

Regulator converts the rotational motion of the motor into linear motion to move the window glass. The auto feature of the window allows the driver to press the button once, and the window will move up or down automatically without the need for continuous pressing.

This is made possible through a sensor system that detects resistance, such as when the window reaches the top or bottom and stops the motor accordingly.

Toyota Highlander Auto Windows Not Working: Causes

There are several causes why your Toyota highlander auto windows might not work. Here, we’ve talked about some possible causes of Toyota Highlander auto windows not working.

Power Window Motor Failure

The power window motor is responsible for moving the window up and down. It can fail over time due to wear and tear, a faulty switch, or electrical issues.

Window Regulator Malfunction

The window regulator is the mechanical system that converts the rotational motion of the power window motor into linear motion to move the window glass. A faulty regulator can cause the window to become stuck, move slowly, or stop working altogether.

Wiring Issues

Electrical wiring can become damaged or disconnected over time, causing the power windows to stop working. This can be due to corrosion, short circuits, or damage from external factors like water or debris.

Blown Fuse

If a power window fuse blows, the windows will stop working. Fuses can blow due to electrical problems, such as a short circuit or overload, or due to a faulty component in the system.

Faulty Window Switch

The window switch is the driver’s button to control the power windows. If the switch is faulty, it may not send the proper electrical signals to the power window motor, preventing the window from moving up or down.

Troubleshooting Toyota Highlander Auto Windows Not Working

If your Toyota Highlander’s auto windows are not working, there are several troubleshooting steps you can take to identify the root cause of the problem.

Check the Fuse: Locate the fuse box for the power windows and check if the fuse is blown. Replace it if necessary.
Test the Window Switch: Use a multimeter to test the window switch and ensure that it is functioning correctly. If the switch is faulty, it will need to be replaced.
Check the Power Window Motor: Test the power window motor by disconnecting it from the window regulator and applying power directly to it. If the motor does not move, it may be faulty and will need to be replaced.
Inspect the Window Regulator: If the motor is working, but the window still does not move, the window regulator may be faulty. Inspect it for signs of damage or wear and replace it if necessary.
Check the Wiring: Check the wiring for any signs of damage or disconnection. Repair or replace any damaged wires.
Inspect the Window Track: Inspect the window track for any blockages or damage that may prevent the window from moving properly. Clean or replace the track if necessary.

How to Reset Toyota Highlander Auto Windows Not Working?

If your Toyota Highlander’s auto windows are not working and you have identified the cause of the problem, resetting the system may help to restore functionality. Here are the steps to reset your Toyota Highlander auto windows:

Turn the ignition key to the “ON” position, but do not start the engine.
Lower the driver’s side window down by pressing and holding the window switch for at least 5 seconds after the window has fully opened.
Release the window switch and then press and hold it down again for at least 5 seconds after the window has fully closed.
Release the window switch again and wait for 2 seconds. Repeat steps 2-4 for each window that is not working.
Turn off the ignition and remove the key. Wait for at least 30 seconds before starting the engine.

Preventive Measures To Keep Toyota Highlander Auto Windows Working

Preventive maintenance is crucial in keeping your Toyota Highlander’s auto windows functioning properly. Here are some measures you can take to prevent power window issues:

Regularly Clean the Windows and Tracks: Dirt, debris, and other contaminants can accumulate on the windows and tracks, which can cause damage to the window regulator or motor. Clean the windows and tracks regularly to prevent this.
Lubricate the Window Tracks: Apply a small amount of silicone spray to the window tracks to keep them lubricated and prevent wear and tear on the window regulator.
Use the Windows Regularly: Use the power windows regularly to keep the components moving and lubricated. This can prevent the window motor and regulator from seizing up due to lack of use.
Avoid Using the Auto-up Feature When the Window is Obstructed: The auto-up feature is designed to prevent the window from closing on an obstruction. However, if the obstruction is large enough, it can damage the window regulator or motor. To prevent this, remove any large obstructions before using the auto-up feature.
Do not Force the Window: If the window is not moving, do not force it. This can cause damage to the window motor, regulator, or other components. Instead, diagnose and repair the underlying issue causing the window malfunction.

How to Fix Faulty Electrical Connections in Toyota Highlander Auto Windows?

Electrical connections are an integral part of the power window system in your Toyota Highlander. When the connections are faulty, it can result in power window malfunctions. Here are the steps to fix faulty electrical connections in your Toyota Highlander auto windows.

Identify the Faulty Connection: The first step is to identify which connection is causing the issue. Check the wiring connections, fuse, and relay for any signs of corrosion, damage, or loose connections.
Disconnect the Battery: Before working on any electrical connections, it is important to disconnect the battery to prevent electrical shock or damage to the electrical system.
Clean the Connections: If there is corrosion on the wiring connections or fuse, use a wire brush or sandpaper to remove the corrosion and clean the connections. This will help to ensure a secure and solid connection.
Tighten Loose Connections: Use a wrench or pliers to tighten any loose connections. Ensure that the connection is tight enough to prevent it from loosening again but not so tight that it damages the connection.
Replace Damaged Components: If the connection or component is damaged beyond repair, replace it with a new one. This may include replacing the wiring, fuse, or relay.
Reconnect the Battery: Once the connections are cleaned and tightened, and any damaged components are replaced, reconnect the battery.
Test the Power Windows: Turn the ignition key to the “ON” position and test the power windows to ensure they are functioning properly.

Conclusion

Toyota Highlander auto windows may stop working due to a few common causes, such as a damaged window switch, a blown fuse, or a defective window motor.

If this happens, the best way to reset the windows is to disconnect and reconnect the battery, reset the window switch, and check all the fuses. If the windows still do not work, it is best to take the car to a certified mechanic for further inspection and repair.

However, by following these steps on Toyota Highlander auto windows not working: causes and how to reset, you can keep your car in excellent condition and ensure the safety of its occupants.