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What could cause the windshield wipers to stop working on my 2020 Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What could cause the windshield wipers to stop working on my 2020 Highlander?

What could cause the windshield wipers to stop working on my 2020 Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn about the common causes of windshield wipers not working on the 2020 Toyota Highlander, along with diagnostic steps and repair instructions.

Affected Component
windshield wiper system
Estimated Time
2-3 hours

Symptoms

  • •Windshield Wipers Not Operating
  • •Wiper Motor Noise
  • •Wipers Stuck in Position
  • •Wiper Blades Moving Slowly

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Jumper wires
  • •Replacement relay
  • •Wire strippers
  • •Electrical tape
  • •Socket set
  • •Torque wrench

Additional Information

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

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Back to Generation
Possible Causes
  1. Blown Fuse: The fuse related to the windshield wiper system may be blown.
  2. Faulty Wiper Motor: The motor may be malfunctioning or burned out.
  3. Bad Relay: The relay that controls the wiper motor may be faulty.
  4. Electrical Issues: Wiring or connector problems could cause a lack of power.
  5. Mechanical Obstruction: Wiper arms may be obstructed, or the linkage may be damaged.
  6. Bad Switch: The wiper control switch in the steering column may be defective.

Step 1: Check the Fuse

  • Tools Required: Multimeter, fuse puller.
  • Instructions:
    1. Locate the fuse box (usually under the dashboard or in the engine bay).
    2. Identify the wiper fuse using the diagram on the fuse box cover.
    3. Pull the fuse and inspect it. A blown fuse will have a broken metal strip inside.
    4. If blown, replace the fuse with one of the same amperage.

Step 2: Test the Wiper Motor

  • Tools Required: Multimeter, jumper wires.
  • Instructions:
    1. Disconnect the wiper motor connector.
    2. Use a multimeter to check for power at the motor connector when the wipers are activated.
    3. If there is power, the motor may be faulty. If no power, continue to the next step.

Step 3: Check the Wiper Relay

  • Tools Required: Multimeter, possibly a replacement relay.
  • Instructions:
    1. Locate the relay box (refer to the owner’s manual).
    2. Identify the wiper relay and remove it.
    3. Use a multimeter to test the relay for continuity.
    4. If the relay is defective, replace it with a new one.

Step 4: Inspect Electrical Connections

  • Tools Required: Wire strippers, electrical tape.
  • Instructions:
    1. Visually inspect the wiring and connectors leading to the wiper motor.
    2. Look for frayed wires, corrosion, or loose connections.
    3. Repair any damaged wiring or connectors.

Step 5: Check Wiper Linkage and Arms

  • Tools Required: Socket set, possibly a torque wrench.
  • Instructions:
    1. Remove the wiper arms by loosening the nuts at the base.
    2. Inspect the linkage that connects the wiper motor to the wiper arms for any damage or disconnection.
    3. If the linkage is damaged, it may need to be replaced or reconnected.

Step 6: Test the Wiper Switch

  • Tools Required: Multimeter.
  • Instructions:
    1. Access the wiper switch by removing the steering column cover.
    2. Test the switch for continuity using a multimeter when the switch is activated.
    3. If there is no continuity, the switch may need to be replaced.
Repair Instructions
  1. Replace Blown Fuse: If the fuse was blown, replace it and test the wipers.
  2. Replace Wiper Motor: If the motor is faulty, remove it by unscrewing the mounting bolts and disconnecting the electrical connector. Install the new motor and reconnect the wiring.
  3. Replace Relay: Swap out the faulty relay with a new one, ensuring it is seated correctly.
  4. Repair Wiring: If there are damaged wires, repair them by splicing in new wire or using electrical tape to secure connections.
  5. Reassemble Wiper Arms: If you removed the wiper arms, reattach them in the proper position and secure the nuts tightly.
  6. Replace Wiper Switch: If the switch is faulty, remove the old switch and install a new one, ensuring all connectors are properly attached.
Final Testing
  • Once all repairs are completed, test the windshield wipers in all settings (low, high, and intermittent) to ensure proper operation. Check for any unusual noises or issues during operation.

If problems persist after all diagnostics and repairs, consider consulting a professional technician for further evaluation.