How can I fix the windshield wipers that are not working properly on my 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

2-3 hours

Time

medium

Difficulty

medium

Severity

4 min read

608 words

Problem Statement

Learn how to diagnose and repair windshield wipers that are not working properly on your 2020 Toyota Highlander with step-by-step instructions.

Affected Component

windshield wipers

Estimated Time

2-3 hours

Symptoms

•Wipers not moving at all.
•Wipers move slowly or intermittently.
•Wipers only work on certain speeds.
•Wipers make a grinding noise or do not return to the park position.

Diagnostic Steps

1
Check Wiper Switch: Ensure the wiper control is set to the correct position.
2
Inspect Fuses: Check the fuse for the windshield wipers.
3
Examine Wiper Blades: Make sure the wiper blades are not damaged or stuck.
4
Listen for Motor Operation: Turn on the wipers and listen for the wiper motor.
5
Check Wiper Linkage: Inspect the linkage that connects the motor to the wiper arms.
6
Inspect Electrical Connections: Check the wiring to the wiper motor for loose connections or damage.

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 pliers
•Screwdrivers (Phillips and flathead)
•Ratchet and socket set (usually 10mm)
•Wrench set
•Pliers
•Electrical contact cleaner (optional)
•Replacement parts (fuse, wiper motor, linkage if necessary)

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Diagnostic Steps

1
Check Wiper Switch: Ensure the wiper control is set to the correct position.
2
Inspect Fuses: Check the fuse for the windshield wipers.
3
Examine Wiper Blades: Make sure the wiper blades are not damaged or stuck.
4
Listen for Motor Operation: Turn on the wipers and listen for the wiper motor.
5
Check Wiper Linkage: Inspect the linkage that connects the motor to the wiper arms.
6
Inspect Electrical Connections: Check the wiring to the wiper motor for loose connections or damage.

Solution

Windshield Wipers Not Working Properly on 2020 Toyota Highlander

Tools Required

Multimeter
Fuse puller or pliers
Screwdrivers (Phillips and flathead)
Ratchet and socket set (usually 10mm)
Wrench set
Pliers
Electrical contact cleaner (optional)
Replacement parts (fuse, wiper motor, linkage if necessary)

Repair Instructions

Step 1: Inspect and Replace the Fuse

Locate the Fuse Box: The fuse box for the wipers is usually located under the dashboard or in the engine compartment. Refer to the owner's manual for the exact location.
Check the Wiper Fuse: Use a fuse puller or pliers to remove the wiper fuse. Inspect it visually; if the wire inside is broken, it’s blown.
Replace with a New Fuse: Replace it with a new fuse of the same amperage.

Step 2: Test the Wiper Motor

Access the Wiper Motor: Remove the plastic cover under the windshield wipers. This usually involves unscrewing a few screws or unclipping the cover.
Disconnect the Motor Connector: Carefully disconnect the electrical connector from the wiper motor.
Check for Power: Using a multimeter, set it to the DC voltage setting. Turn on the ignition and the wipers, and check for voltage at the motor connector. If there’s no voltage, the issue may be in the switch or wiring.
Test the Motor: If voltage is present, ground one probe of the multimeter and touch the other to the power terminal of the motor. If the motor does not operate, it may need to be replaced.

Step 3: Inspect and Repair the Wiper Linkage

Check the Linkage: Observe the movement of the wiper arms while the motor is operating. If they don’t move, the linkage may be loose or disconnected.
Tighten or Replace: If the linkage is loose, tighten the bolts. If damaged, you will need to replace the linkage assembly.
Reassemble: Once repairs are made, reattach the wiper arms and ensure they are aligned.

Step 4: Reassemble and Test

Reattach Covers: Put back any covers or panels that were removed to access the wiper components.
Test Wipers: Turn on the wipers and test all settings to ensure proper operation.
Final Check: Ensure that the wipers return to the park position correctly and operate smoothly without noise.

Conclusion

After following the above steps, your windshield wipers should function correctly. If issues persist after testing the motor and linkage, consider consulting a professional mechanic or your dealership for further diagnostics, as there may be underlying electrical issues.