how to fix my Toyota Highlander Third Generation (2014-2019) windows that won't go up or down?

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

572 words

Problem Statement

Learn how to diagnose and fix power windows not working in a 2014-2019 Toyota Highlander. Step-by-step guide with tools and safety tips.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shock.
•Allow the vehicle to cool down before starting any repairs.

Symptoms

•No response when pressing the window switch
•Window motor noise is absent during operation
•Windows are stuck in the open or closed position
•Other electrical components (e.g., locks, lights) function normally
•Potential blown fuse related to the window circuit

Diagnostic Steps

1
Inspect the window lock switch to ensure it is not engaged.
2
Check the related fuses in the fuse box for any blown fuses specific to the power windows.
3
Use an OBD-II scanner to check for any error codes related to the Body Control Module (BCM).
4
Test the window switch by swapping it with a known working switch from another window.
5
Inspect the wiring harness for any damage or disconnection leading to the window motor.
6
Test the window motor directly with a power source to check if it functions.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set
•Flathead screwdriver
•Phillips screwdriver
•Multimeter
•Fuse puller (optional)

Parts Required

•Window switch (if faulty)
•Window motor (if faulty)
•Replacement fuses (as needed)

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Diagnostic Steps

1
Inspect the window lock switch to ensure it is not engaged.
2
Check the related fuses in the fuse box for any blown fuses specific to the power windows.
3
Use an OBD-II scanner to check for any error codes related to the Body Control Module (BCM).
4
Test the window switch by swapping it with a known working switch from another window.
5
Inspect the wiring harness for any damage or disconnection leading to the window motor.
6
Test the window motor directly with a power source to check if it functions.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the battery to prevent electrical shock.
Tools required: socket set, flathead screwdriver, Phillips screwdriver, multimeter.

2. Check and Replace the Fuse

Locate the fuse box under the dashboard and/or engine compartment.
Identify the power window fuse using the diagram on the fuse box cover.
Using a fuse puller or needle-nose pliers, remove the fuse and inspect it for continuity.
If the fuse is blown, replace it with a new fuse of the same amperage.

3. Inspect and Replace the Window Switch

Remove the door panel using a Phillips screwdriver and flathead screwdriver.
Disconnect the battery again if necessary.
Locate the window switch assembly and disconnect the wiring harness.
Test the switch with a multimeter for continuity.
If defective, replace the switch by installing the new one and connecting the wiring harness.

4. Test the Window Motor

If the switch is operational, test the window motor.
Locate the window motor and disconnect the wiring harness.
Use a multimeter to check for voltage at the motor terminals while pressing the window switch.
If there is no voltage, trace the wiring back to the switch for any breaks.
If voltage is present but the motor does not work, replace the window motor.

5. Reassemble

Reattach the door panel by aligning it properly and securing it with screws.
Reconnect the battery.
Test the window operation to ensure everything is functioning correctly.