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How can I fix the windshield wiper malfunction in my 2021 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How can I fix the windshield wiper malfunction in my 2021 Toyota Highlander?

How can I fix the windshield wiper malfunction in my 2021 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and repair windshield wiper malfunctions in your 2021 Toyota Highlander with step-by-step instructions.

Affected Component
windshield wiper system
Estimated Time
2-4 hours

Symptoms

  • •Wipers Not Functioning
  • •Inconsistent Wiper Operation
  • •Wiper Stuck in Position
  • •Noisy Operation

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

  • •Multimeter
  • •Fuse puller or pliers
  • •Screwdrivers (Phillips and flathead)
  • •Socket set
  • •Wrench set
  • •Replacement fuses/relay (if necessary)
  • •Replacement wiper motor or linkage (if necessary)

Additional Information

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

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Back to Generation
Windshield Wiper Malfunction in 2021 Toyota Highlander
Tools Required
  • Multimeter
  • Fuse puller or pliers
  • Screwdrivers (Phillips and flathead)
  • Socket set
  • Wrench set
  • Replacement fuses/relay (if necessary)
  • Replacement wiper motor or linkage (if necessary)
Repair Instructions

Step 1: Replace Wiper Fuse

  1. Disconnect Battery: Remove the negative terminal from the battery to prevent any electrical issues.
  2. Locate Fuse Box: Find the fuse box and identify the wiper fuse.
  3. Remove and Inspect: Use a fuse puller to remove the wiper fuse. Inspect and replace if blown.
  4. Reconnect Battery: Reattach the negative battery terminal.

Step 2: Replace Wiper Relay

  1. Disconnect Battery: As above, disconnect the negative battery terminal.
  2. Locate Wiper Relay: Find the relay in the fuse box and remove it.
  3. Install New Relay: Insert a new relay in the same slot.
  4. Reconnect Battery: Reattach the negative terminal and test the wipers.

Step 3: Replace Wiper Motor

  1. Disconnect Battery: Ensure the negative terminal is disconnected.
  2. Remove Wiper Arms:
    • Use a flathead screwdriver to gently lift the plastic caps at the base of the wiper arms.
    • Use a socket set to remove the nuts securing the wiper arms and lift them off.
  3. Access Wiper Motor:
    • Remove any covers or components blocking access to the wiper motor.
    • Disconnect the electrical connector from the motor.
    • Remove mounting bolts securing the motor using a socket set.
  4. Install New Wiper Motor:
    • Position the new motor and secure it with bolts.
    • Reconnect the electrical connector.
  5. Reinstall Wiper Arms: Position the wiper arms back onto the motor and secure with nuts.
  6. Reconnect Battery: Attach the negative terminal and test functionality.

Step 4: Repair or Replace Wiper Linkage

  1. Inspect Linkage: If the wipers are still malfunctioning, inspect the mechanical linkage for damage or disconnections.
  2. Replace Linkage: If necessary, remove the motor and linkage assembly.
    • Disconnect any bolts and clips holding the linkage.
    • Install the new linkage and reassemble.
Final Testing

After performing any repairs, turn on the ignition and test the wipers through all settings (off, low, high, and intermittent). Ensure they operate smoothly and return to the correct resting position.

Conclusion

Following these steps should help in diagnosing and fixing the windshield wiper malfunction in your 2021 Toyota Highlander. If you continue to experience issues after these repairs, further diagnostics may be needed, potentially requiring professional assistance.