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How can I fix the windshield wipers that won’t turn off in my Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How can I fix the windshield wipers that won’t turn off in my Highlander?

How can I fix the windshield wipers that won’t turn off in my Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
2-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
616 words

Problem Statement

Learn how to diagnose and repair windshield wipers that won't turn off in your Toyota Highlander with step-by-step instructions.

Affected Component
windshield wiper system
Estimated Time
2-3 hours

Symptoms

  • •Windshield wipers continue to operate even after the wiper switch is turned to the 'OFF' position.
  • •Wipers may also get stuck in a specific position.
  • •Intermittent wiper settings may also fail.

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

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

  • •Flathead screwdriver
  • •Phillips screwdriver
  • •Multimeter
  • •OBD-II scanner

Additional Information

Affected Component
windshield wiper system
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
4 items

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Back to Generation
Problem: Windshield Wipers Won’t Turn Off on Toyota Highlander (2020-present)

Symptoms:

  • Windshield wipers continue to operate even after the wiper switch is turned to the "OFF" position.
  • Wipers may also get stuck in a specific position.
  • Intermittent wiper settings may also fail.
Repair Instructions

Tools Required

  • Flathead screwdriver
  • Phillips screwdriver
  • Multimeter
  • OBD-II scanner
  • Replacement wiper relay (if necessary)
  • Replacement wiper switch (if necessary)
  • Wiring harness repair kit (if necessary)

Step 1: Wiper Switch Replacement

  1. Disconnect the Battery:
    • Disconnect the negative terminal of the battery to ensure safety.
  2. Remove the Steering Column Covers:
    • Use a Phillips screwdriver to remove screws securing the steering column covers.
    • Gently pry off the covers to expose the wiper switch.
  3. Disconnect the Wiper Switch:
    • Locate the electrical connector for the wiper switch and disconnect it.
  4. Remove the Wiper Switch:
    • Unscrew any screws holding the wiper switch in place and remove it.
  5. Install the New Wiper Switch:
    • Position the new wiper switch and secure it with screws.
    • Reconnect the electrical connector.
  6. Reassemble the Steering Column Covers:
    • Replace the steering column covers and secure them with screws.
  7. Reconnect the Battery:
    • Reconnect the negative terminal of the battery.
  8. Test the Wipers:
    • Turn on the ignition and check if the wipers function correctly.

Step 2: Wiper Relay Replacement

  1. Locate the Fuse Box:
    • Open the driver-side door and locate the fuse box (usually under the dashboard or in the engine bay).
  2. Identify the Wiper Relay:
    • Use the fuse box diagram to find the location of the windshield wiper relay.
  3. Remove the Relay:
    • Pull the relay straight out of its socket. If it’s difficult, use a flathead screwdriver to gently pry it out.
  4. Install the New Relay:
    • Insert the new relay into the same socket.
  5. Test the Wipers:
    • Start the vehicle and check if the wipers are functioning correctly.
Final Checks
  • After making repairs, test the windshield wipers thoroughly in different settings (off, low, high, and intermittent).
  • If the problem persists, further investigation into the wiper motor or the Body Control Module (BCM) may be necessary.
Conclusion

By following these diagnostic steps and repair instructions, you should be able to identify and fix the issue of windshield wipers that won’t turn off in your Toyota Highlander. If problems continue, consider consulting a professional technician for a deeper analysis.