why is my Toyota Highlander XU70 (2020-Present) windshield wipers not working

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, and flathead screwdriver.
• Ensure the vehicle is parked on a level surface and the engine is off.

2. Check and Replace the Wiper Fuse

• Locate the fuse box, typically found under the dashboard or in the engine compartment.
• Use the fuse diagram to identify the windshield wiper fuse.
• Remove the fuse using a fuse puller or flathead screwdriver.
• Inspect the fuse for continuity; if blown, replace it with a new fuse of the same amperage.

3. Test the Wiper Motor

• Disconnect the electrical connector from the wiper motor.
• Set the multimeter to the DC voltage setting.
• Turn the ignition on and engage the wiper switch to the "on" position.
• Probe the motor connector with the multimeter to check for voltage (should be around 12 volts).
• If there is no voltage, further investigate the wiring or switch.

4. Inspect the Wiper Linkage

• Remove the wiper arms by loosening the retaining nuts with the socket set.
• Lift the wiper arms off the windshield and set them aside.
• Inspect the wiper linkage for any visible damage or disconnections.
• If damaged, replace the linkage with a new one.

5. Reassemble and Test

• Reattach the wiper arms to the motor splines, ensuring they are secured correctly.
• Reconnect the wiper motor electrical connector.
• Test the wipers by turning them on to ensure they function properly.