how to fix the power windows not working on my Toyota Highlander Third Generation (2014-2019)

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

4 min read

608 words

Problem Statement

Learn how to diagnose and fix power windows not working in Toyota Highlander (2014-2019). Step-by-step guide with diagnostic steps and repair instructions.

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 prevent shock.
•Allow the vehicle to cool before working on any components connected to the electrical system.

Symptoms

•All power windows are unresponsive
•Window control switches are non-functional
•No sound or movement when buttons are pressed
•Possible blowing of the fuse related to the power windows
•Driver's side window control operates only some windows or not at all

Diagnostic Steps

1
Inspect the window fuse in the fuse box for any visible damage or blowouts.
2
Use an OBD-II scanner to check for any related fault codes that may indicate electrical issues.
3
Test the power window switches for continuity using a multimeter to ensure they are functioning properly.
4
Check the wiring harness connections at the door and window motor for any damage or loose connections.
5
Test the window motor directly by applying power to it to see if it operates independently of the switch.

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
•Multimeter
•Flathead screwdriver
•Phillips screwdriver

Parts Required

•Power window fuse (if blown)
•Window switch (if defective)
•Window motor (if defective)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the window fuse in the fuse box for any visible damage or blowouts.
2
Use an OBD-II scanner to check for any related fault codes that may indicate electrical issues.
3
Test the power window switches for continuity using a multimeter to ensure they are functioning properly.
4
Check the wiring harness connections at the door and window motor for any damage or loose connections.
5
Test the window motor directly by applying power to it to see if it operates independently of the switch.

Solution

1. Preparation

Gather tools: socket set, multimeter, flathead screwdriver, and a Phillips screwdriver.
Disconnect the negative terminal of the battery to prevent electrical shock.

2. Check and Replace Fuse

Locate the fuse box: Refer to the owner's manual for the exact location of the fuse box.
Inspect the power window fuse: Remove the cover and locate the power window fuse. Check if it is blown.
Replace the fuse: If blown, replace it with a new fuse of the same amperage (usually 30A).

3. Inspect and Replace Window Switches

Remove the door panel: Use a flathead screwdriver to gently pry off the door panel clips and screws, then carefully detach the panel.
Access the window switch: Locate the power window switch and disconnect the wiring harness.
Test the switch: Using the multimeter, check for continuity across the switch terminals while pressing the button.
Replace the switch: If defective, install a new switch by connecting the harness and reassembling the door panel.

4. Check and Replace Window Motor

Access the window motor: With the door panel removed, locate the window motor.
Disconnect the motor: Remove any screws securing the motor and disconnect the wiring harness.
Test the motor: Connect a direct power source to the motor terminals to check for operation.
Replace the motor: If the motor does not operate, replace it with a new one by reversing the disassembly process.

5. Reassemble and Test

Reattach the door panel: Carefully align the panel and press it back into place until the clips snap securely.
Reconnect the battery: Securely attach the negative terminal back to the battery.
Test the windows: Press the window switches to ensure all windows operate correctly.