what should I do if my Toyota Highlander Fourth Generation (2020-present) wipers don’t work in the w...

Toyota Highlander Fourth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

572 words

Problem Statement

Learn how to diagnose and fix windshield wipers not working in winter on a Toyota Highlander. Step-by-step guide with symptoms and solutions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before working on any components near the engine.

Symptoms

•Wipers do not move at all
•Wipers move slowly or intermittently
•Wipers make a grinding noise when activated
•Washer fluid does not spray
•Wiper blades leave streaks or do not clear the windshield effectively

Diagnostic Steps

1
Inspect the wiper blades for ice or snow buildup that may hinder movement.
2
Check the windshield washer fluid reservoir for sufficient fluid level and inspect the lines for blockages.
3
Test the wiper switch to ensure it is functioning correctly by toggling between different settings.
4
Examine the wiper motor for any visible damage or corrosion.
5
Use a multimeter to check for power at the wiper motor connector while operating the switch.
6
Inspect the fuses related to the wiper system using the fuse box diagram.

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

•Flathead screwdriver
•Socket set
•Multimeter
•Plastic scraper

Parts Required

•Wiper blades
•Windshield washer fluid
•Wiper motor (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the wiper blades for ice or snow buildup that may hinder movement.
2
Check the windshield washer fluid reservoir for sufficient fluid level and inspect the lines for blockages.
3
Test the wiper switch to ensure it is functioning correctly by toggling between different settings.
4
Examine the wiper motor for any visible damage or corrosion.
5
Use a multimeter to check for power at the wiper motor connector while operating the switch.
6
Inspect the fuses related to the wiper system using the fuse box diagram.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a safe location with the engine off and keys removed.
Disconnect the battery to prevent electrical shorts.

2. Remove Ice and Debris

Use a plastic scraper to gently remove any ice or snow from the wiper blades and windshield.
If necessary, allow the vehicle to warm up slightly to help melt ice buildup.

3. Inspect and Replace Wiper Blades

Tools Required: Flathead screwdriver (if needed for clip release)
Lift the wiper arms and press the release tab on the wiper blade to detach it from the arm.
Install new wiper blades by aligning them with the wiper arm and pressing firmly until they click into place.

4. Check and Clear Washer Fluid System

Locate the windshield washer fluid reservoir and ensure it is filled with fluid suitable for cold temperatures.
If the washer fluid does not spray, inspect the nozzle for blockages using a pin to clear any debris.

5. Test Wiper Motor and Electrical Connections

Reconnect the battery.
Activate the wipers and listen for the motor operation.
If there is no movement, check the wiring harness for corrosion or loose connections. Repair or replace as necessary.

6. Replace Wiper Motor (if necessary)

Tools Required: Socket set, torque wrench
Remove any covers or components obstructing access to the wiper motor.
Disconnect the electrical connector and unbolt the motor from its mounting.
Install the new motor by reversing the removal steps and torque bolts to manufacturer specifications.