how can I fix my Toyota Highlander Fourth Generation (2020-present) windshield wipers that won’t tur...

Toyota Highlander Fourth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

497 words

Problem Statement

Learn how to diagnose and fix windshield wipers that won't turn off in a Toyota Highlander. Step-by-step guide with tools and procedures included.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shocks or shorts.

Symptoms

•Windshield wipers continue to operate without command
•Wiper control stalk feels loose or unresponsive
•Windshield washer fluid may spray unexpectedly
•Fuse associated with wiper motor may be blown
•Wiper motor may be making unusual noises

Diagnostic Steps

1
Inspect the wiper control stalk for any visible damage or looseness.
2
Check for any blown fuses in the fuse box related to the windshield wipers.
3
Use an OBD-II scanner to check for any error codes that may relate to the wiper system.
4
Test the wiper motor directly by applying power to it to determine if it operates correctly.
5
Inspect the wiring harness connected to the wiper motor for any signs of short circuits or corrosion.

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

•OBD-II scanner
•Screwdriver set
•Trim removal tool
•Fuse puller or pliers
•Jumper wires
•Multimeter

Parts Required

•Wiper control stalk (if faulty)
•Wiper motor fuse (if blown)

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 control stalk for any visible damage or looseness.
2
Check for any blown fuses in the fuse box related to the windshield wipers.
3
Use an OBD-II scanner to check for any error codes that may relate to the wiper system.
4
Test the wiper motor directly by applying power to it to determine if it operates correctly.
5
Inspect the wiring harness connected to the wiper motor for any signs of short circuits or corrosion.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the negative terminal of the battery to ensure safety during repairs.

2. Inspect and Replace Wiper Control Stalk

Tools Required: Screwdriver set, trim removal tool.
Remove the steering column cover using a screwdriver.
Disconnect the wiring harness from the wiper control stalk.
Remove the wiper control stalk by unscrewing it from the steering column.
Install the new wiper control stalk by reversing the removal steps.
Reconnect the wiring harness and reassemble the steering column cover.

3. Check and Replace Wiper Motor Fuse

Tools Required: Fuse puller or pliers.
Locate the fuse box (usually under the dashboard or near the engine compartment).
Identify the fuse for the windshield wipers (refer to the owner’s manual for the exact location).
Pull the fuse and inspect it; replace it if blown with a new fuse of the same amperage.

4. Test Wiper Motor

Tools Required: Jumper wires, multimeter.
Remove the wiper motor from its mounting (typically requires a socket set).
Connect jumper wires directly to the motor terminals to test its operation.
If the motor operates when powered directly, the issue may be related to the control system.