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How do I resolve the issue of my 2020 Highlander's windshield wipers not working? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How do I resolve the issue of my 2020 Highlander's windshield wipers not working?

How do I resolve the issue of my 2020 Highlander's windshield wipers not working?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
1-2 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
567 words

Problem Statement

Learn how to diagnose and repair windshield wiper issues on your 2020 Toyota Highlander with step-by-step instructions and required tools.

Affected Component
windshield wiper system
Estimated Time
1-2 hours

Symptoms

  • •Windshield wipers do not operate when activated.
  • •Wipers may be stuck in a certain position (either up or down).
  • •Wipers may operate intermittently or at a reduced speed.
  • •No noise or movement from the wiper motor.

Diagnostic Steps

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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 (optional)
  • •OBD-II scanner
  • •Screwdriver set
  • •Pliers
  • •Safety glasses
  • •Torque wrench (if applicable for reassembly)

Additional Information

Affected Component
windshield wiper system
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
7 items

Related Faults

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Back to Generation

Resolving Windshield Wiper Issues on a 2020 Toyota Highlander

Tools Required
  • Multimeter
  • Fuse puller (optional)
  • OBD-II scanner
  • Screwdriver set
  • Pliers
  • Safety glasses
  • Torque wrench (if applicable for reassembly)
Repair Instructions
If the Fuse is Blown:
  1. Remove the blown fuse using a fuse puller.
  2. Replace it with a new fuse of the same amperage (refer to the owner's manual for specification).
  3. Test the wipers again by activating the switch.
If the Wiper Motor is Faulty:
  1. Disconnect the negative battery terminal to avoid any electrical shorts.
  2. Remove the wiper arms using a wiper arm puller if necessary.
  3. Remove the cowling by unscrewing the screws and gently prying it off.
  4. Disconnect the wiring harness from the wiper motor.
  5. Unbolt the wiper motor from its mounting bracket (usually requires a ratchet and socket).
  6. Install the new wiper motor by reversing the steps:
    • Bolt down the new motor.
    • Reconnect the wiring harness.
    • Reinstall the cowling and wiper arms.
  7. Reconnect the negative battery terminal and test the wipers.
If the Wiper Relay is Faulty:
  1. Locate the relay in the fuse box.
  2. Remove the relay and inspect for any signs of damage.
  3. Replace with a new relay of the same specifications.
  4. Test the wipers after installation.
If Mechanical Issues are Found:
  1. If the wiper linkage is broken or disconnected, replace or reconnect it as necessary.
  2. Ensure the wiper arms are securely fastened to the motor spline.
Conclusion

After completing the appropriate diagnostics and repairs, test the windshield wipers to ensure they function correctly across all settings. If the problem persists, further investigation may be required, potentially involving deeper electrical issues or assistance from a professional technician.