how to fix my Toyota Highlander Third Generation (2014-2019) that has no power to the windows?

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

557 words

Problem Statement

Learn how to diagnose and fix power window issues in Toyota Highlander (2014-2019). Step-by-step guide with symptoms, 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 or short circuits

Symptoms

•Power window controls are unresponsive
•No sound from window motors when pressing the controls
•Other electrical components (e.g., lights, radio) function normally
•Window lock switch may be activated, preventing operation
•Possible blown fuse related to window operation

Diagnostic Steps

1
Inspect the window lock switch to ensure it is in the 'unlocked' position
2
Check the relevant fuses in the fuse box for any blown fuses
3
Use a multimeter to test for voltage at the window switch harness
4
Inspect the wiring harness for any visible damage or loose connections
5
Test the power window motors by applying direct voltage to them

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

•Multimeter
•Fuse puller or needle-nose pliers
•Screwdrivers (Phillips and flat)
•Jumper wires

Parts Required

•Replacement fuses (if blown)
•Window motor (if found faulty)

Related Faults

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Diagnostic Steps

1
Inspect the window lock switch to ensure it is in the 'unlocked' position
2
Check the relevant fuses in the fuse box for any blown fuses
3
Use a multimeter to test for voltage at the window switch harness
4
Inspect the wiring harness for any visible damage or loose connections
5
Test the power window motors by applying direct voltage to them

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and turn off the ignition.
Disconnect the negative terminal of the battery for safety.

2. Inspect and Test the Window Lock Switch

Reconnect the battery temporarily.
Check the window lock switch position; toggle it to the "unlock" position.
If still non-functional, turn off the ignition and disconnect the battery again.

3. Check and Replace Fuses

Locate the fuse box (refer to the owner's manual for exact location).
Identify the fuse associated with the power windows (check the diagram on the fuse box cover).
Remove the fuse using a fuse puller or needle-nose pliers.
Inspect the fuse; if it is blown, replace it with a new fuse of the same amperage.

4. Testing Voltage at the Window Switch

Reconnect the battery and turn on the ignition.
Use a multimeter set to DC voltage to check for power at the power window switch.
If voltage is present, the switch is likely good; if not, proceed to check the wiring.

5. Inspect Wiring and Connectors

Disconnect the window switch connector and inspect for corrosion or damage.
If any issues are found, repair or replace the wiring as necessary.
Reconnect the switch and test functionality again.

6. Test Power Window Motors

Remove the door panel to access the window motor.
Disconnect the motor connector.
Using jumper wires, apply 12V directly to the motor terminals to test its operation.
If the motor does not operate, it may need to be replaced.

7. Reassemble

If any components were removed, reassemble in reverse order.
Ensure all screws and clips are securely fastened.
Reconnect the negative battery terminal.