my Toyota Highlander’s windshield wipers aren’t working properly, how to fix?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

Learn how to diagnose and fix windshield wipers not working on Toyota Highlander. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent shock.

Symptoms

•Windshield wipers do not move
•Wipers operate intermittently
•Wipers move slowly
•Wiper blades do not make proper contact with the windshield
•No sound from the wiper motor when activated

Diagnostic Steps

1
Inspect the wiper switch for any visible damage or corrosion.
2
Check the fuse related to the windshield wipers in the fuse box.
3
Use a multimeter to test for power at the wiper motor connector.
4
Inspect wiper linkage for any disconnection or damage.
5
Examine the wiper blades for wear or obstruction.
6
Test the wiper motor directly by applying power to it.

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
•Screwdrivers
•Multimeter

Parts Required

•Wiper motor (if faulty)
•Wiper switch (if faulty)
•Wiper linkage (if damaged)
•Wiper blades (if worn)

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Diagnostic Steps

1
Inspect the wiper switch for any visible damage or corrosion.
2
Check the fuse related to the windshield wipers in the fuse box.
3
Use a multimeter to test for power at the wiper motor connector.
4
Inspect wiper linkage for any disconnection or damage.
5
Examine the wiper blades for wear or obstruction.
6
Test the wiper motor directly by applying power to it.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface.
Disconnect the negative battery terminal to prevent electrical shock.
Gather tools such as a socket set, multimeter, and screwdrivers.

2. Check and Replace Fuse

Locate the fuse box, usually found under the dashboard or in the engine compartment.
Remove the cover and locate the wiper fuse (consult the owner's manual for location).
Inspect the fuse; if it is blown, replace it with a new fuse of the same amperage.

3. Inspect Wiper Switch

Remove the steering column cover using a screwdriver.
Disconnect the wiring harness from the wiper switch.
Test the switch continuity with a multimeter. If it is faulty, replace the switch.

4. Examine Wiper Motor

Locate the wiper motor, typically under the cowl panel at the base of the windshield.
Disconnect the motor's electrical connector.
Test the motor with a multimeter for continuity. If no continuity is found, replace the motor.
If the motor is functional, inspect the mounting bolts and ensure the motor is securely attached.

5. Inspect Wiper Linkage

Remove the wiper arms by loosening the nut at the base of each arm using a socket set.
Lift the arms off and set them aside.
Inspect the wiper linkage for any loose or damaged components. If necessary, replace the linkage.

6. Reassemble and Test

Reattach the wiper arms and tighten the nuts securely.
Reconnect the battery terminal.
Test the wipers by turning on the switch to ensure proper operation.