how to fix the rear wiper not working on Toyota Highlander XU70 (2020-Present)

Toyota Highlander XU70 (2020-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

465 words

Problem Statement

Learn how to diagnose and fix the rear wiper not working on Toyota Highlander XU70 (2020-present). Step-by-step guide with tools and parts required.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to avoid shock or short circuits.

Symptoms

•Rear wiper does not operate when activated
•Rear wiper motor makes no noise
•Rear wiper blade does not move
•Rear wiper fluid does not spray
•Rear wiper fuse may be blown

Diagnostic Steps

1
Inspect the rear wiper switch on the steering column for functionality.
2
Check the fuse related to the rear wiper in the fuse box for continuity.
3
Use a multimeter to test for power at the rear wiper motor connector.
4
Examine the wiring harness for any visible damage or disconnections.
5
Test the rear wiper motor directly by applying battery power to it.

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

•Socket set
•Multimeter
•Fuse puller or pliers
•Screwdriver set

Parts Required

•Rear wiper motor (if found defective)
•Replacement fuse (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the rear wiper switch on the steering column for functionality.
2
Check the fuse related to the rear wiper in the fuse box for continuity.
3
Use a multimeter to test for power at the rear wiper motor connector.
4
Examine the wiring harness for any visible damage or disconnections.
5
Test the rear wiper motor directly by applying battery power to it.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the negative battery terminal to prevent electrical shock.

2. Check and Replace the Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the fuse for the rear wiper using the diagram on the fuse box cover.
Remove the fuse using a fuse puller or pliers.
Inspect the fuse for continuity; replace if blown.

3. Inspect and Replace the Rear Wiper Motor

Reconnect the negative battery terminal.
Remove the rear wiper arm by loosening the retaining nut with a socket set.
Pull the wiper arm off the shaft carefully.
Disconnect the wiring harness from the rear wiper motor.
Remove the motor mounting screws and take out the motor.
Install the new rear wiper motor by reversing the removal steps.
Reattach the wiring harness and ensure it clicks into place.
Reinstall the rear wiper arm and secure it with the retaining nut.

4. Test the System

Reconnect the negative battery terminal.
Turn on the ignition and activate the rear wiper switch.
Ensure the wiper operates as intended.