How can I resolve problems with the windshield wipers in my 2020 Toyota Highlander?

Windshield Wiper Problems in a 2020 Toyota Highlander: Diagnosis and Repair

Windshield wipers are crucial for visibility during inclement weather. If you're experiencing problems with the wipers on your 2020 Toyota Highlander, follow this detailed guide to diagnose and resolve the issue.

Tools Required

• Basic Hand Tools: Screwdrivers, pliers, wrenches
• Multimeter: For electrical tests
• Fuse Puller: To safely remove fuses
• Replacement Parts: Wiper blades, wiper motor (if needed), relay
• Cleaning Supplies: Glass cleaner, cloth for windshield cleaning

Repair Instructions

Step 1: Replace Wiper Blades

1. Lift the Wiper Arm: Raise the wiper arm away from the windshield.
2. Remove Old Blades: Press the release tab on the wiper blade connector and slide the blade off the arm.
3. Install New Blades: Align the new blade with the arm and slide it into place until it clicks.
4. Lower the Wiper Arm: Gently lower the arm back onto the windshield.

Step 2: Replace Fuses and Relays

1. Locate the Fuse Box: Refer to the owner’s manual for the exact location.
2. Remove the Fuse: Use a fuse puller to remove the wiper fuse and inspect it for continuity. Replace if blown.
3. Test/Replace Relay: Remove the wiper relay, check for continuity, and replace if defective.

Step 3: Repair or Replace Wiper Motor

1. Disconnect Battery: Disconnect the negative terminal to prevent electrical shorts.
2. Remove the Wiper Arm: If necessary, remove the wiper arm by loosening the nut that holds it in place.
3. Access Wiper Motor: Remove the panel covering the wiper motor (if applicable).
4. Disconnect Motor Connector: Unplug the electrical connector from the motor.
5. Remove Mounting Bolts: Unscrew the mounting bolts securing the motor to the vehicle.
6. Install New Motor: Position the new motor and secure it with the mounting bolts.
7. Reconnect Electrical Connector: Plug the motor back in.
8. Reassemble Wiper Arm and Cover: Reattach the wiper arm and any covers removed.

Step 4: Test the Wipers

1. Reconnect Battery: Reconnect the negative terminal.
2. Check Operation: Activate the wipers to ensure they function correctly and park in the correct position.

Conclusion

By following these detailed steps, you should be able to diagnose and resolve common windshield wiper problems in your 2020 Toyota Highlander. If issues persist after these repairs, consider consulting a professional technician for further diagnostics.