how to troubleshoot power windows not working in Toyota Highlander Third Generation (2014-2019)

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

554 words

Problem Statement

Learn how to troubleshoot and fix power windows not working in Toyota Highlander 2014-2019. Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the vehicle to cool before removing any interior components

Symptoms

•Power windows do not operate from any switch
•Windows may move slowly or get stuck
•Window controls may feel warm to the touch
•Driver's side window control switch does not operate other windows
•No sound or motor activity when pressing the window switch

Diagnostic Steps

1
Inspect the fuse box for a blown fuse related to the power window circuit
2
Use an OBD-II scanner to check for any related fault codes
3
Test each power window switch for continuity with a multimeter
4
Check the wiring harness for damage or loose connections at the door and body junctions
5
Inspect the window motor for proper function by applying direct power
6
Verify that the window regulator is not jammed or obstructed

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

•OBD-II scanner
•Multimeter
•Trim removal tool
•Socket set
•Screwdriver set

Parts Required

•Power window switch (if faulty)
•Window motor (if faulty)
•Window regulator (if faulty)
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the fuse box for a blown fuse related to the power window circuit
2
Use an OBD-II scanner to check for any related fault codes
3
Test each power window switch for continuity with a multimeter
4
Check the wiring harness for damage or loose connections at the door and body junctions
5
Inspect the window motor for proper function by applying direct power
6
Verify that the window regulator is not jammed or obstructed

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Inspect Fuses

Locate the fuse box under the dashboard and/or in the engine compartment.
Remove the cover and check the fuse diagram for the power window fuse.
Replace any blown fuses with the same amperage rating (typically 30A).

3. Test Power Window Switches

Remove the panel covering the power window switches using a trim removal tool.
Disconnect the switch connector and use a multimeter to test for continuity across the switch terminals when toggled.
If the switch is faulty, replace it with a new one.

4. Check Wiring and Connections

Inspect the wiring harness between the door and the body for any signs of wear or damage.
Ensure all connectors are securely fastened and free of corrosion.
Repair any damaged wires using solder and heat shrink tubing, or replace the harness if necessary.

5. Test Window Motor

Remove the door panel to access the window motor.
Disconnect the motor connector and apply direct battery voltage (12V) to the motor's terminals.
If the motor operates, the issue may lie with the switch or wiring; if it does not, the motor may need replacement.

6. Inspect Window Regulator

Ensure the window regulator is not obstructed by debris or damaged.
Manually move the window up and down to feel for resistance.
If the regulator is malfunctioning, replace it.