how to fix the rear wiper not working on my Toyota Highlander?

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

567 words

Problem Statement

Learn how to diagnose and fix the rear wiper not working on your Toyota Highlander. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the vehicle to cool if serviced after driving to avoid burns.

Symptoms

•Rear wiper does not activate when switched on
•Rear wiper motor makes no noise
•Rear wiper blade does not move
•No water sprays from rear washer nozzle
•Check for any associated warning lights on the dashboard

Diagnostic Steps

1
Check the rear wiper switch for functionality using a multimeter.
2
Inspect the fuse associated with the rear wiper in the fuse box.
3
Verify power supply to the rear wiper motor by checking voltage at the motor connector.
4
Test the rear wiper motor by applying direct power to it.
5
Inspect the rear wiper linkage for any obstructions or damage.
6
Check the washer fluid reservoir and pump operation if the washer is also non-functional.

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
•Multimeter
•Socket set
•Flathead screwdriver
•Torque wrench

Parts Required

•Rear wiper motor (if faulty)
•Rear wiper linkage (if damaged)
•Rear wiper fuse (if blown)
•Washer pump (if faulty)

Related Faults

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Diagnostic Steps

1
Check the rear wiper switch for functionality using a multimeter.
2
Inspect the fuse associated with the rear wiper in the fuse box.
3
Verify power supply to the rear wiper motor by checking voltage at the motor connector.
4
Test the rear wiper motor by applying direct power to it.
5
Inspect the rear wiper linkage for any obstructions or damage.
6
Check the washer fluid reservoir and pump operation if the washer is also non-functional.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, flathead screwdriver, and a torque wrench.
Ensure the vehicle is parked on a level surface with the engine off.
Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Fuse

Locate the fuse box in the vehicle; refer to the owner's manual for the exact location.
Remove the cover and identify the fuse for the rear wiper using the diagram on the inside of the cover.
Use a fuse puller or pliers to remove the fuse and inspect it.
- If the fuse is blown, replace it with a new fuse of the same amperage.

3. Test and Replace Rear Wiper Motor

Reconnect the battery.
Use the multimeter to check for voltage at the rear wiper motor connector while activating the wiper switch.
- If voltage is present but the motor does not operate, replace the rear wiper motor.
- To replace, remove the retaining bolts using the socket set, disconnect the motor harness, and install the new motor by reversing the process.

4. Inspect Rear Wiper Linkage

Remove the rear wiper arm by loosening the retaining nut with a socket set and gently pulling it off.
Inspect the linkage for any signs of wear or disconnection.
- If damaged, replace the linkage assembly as needed.

5. Check Washer System

If the washer is not functioning, check the washer fluid reservoir and pump.
Remove the reservoir and inspect for clogs or damage.
If necessary, replace the washer pump by disconnecting the electrical connector and removing the mounting hardware.