how to fix the rear window wiper not working on my Toyota RAV4 Fifth Generation (2019-present)

Toyota RAV4 Fifth Generation (2019-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

548 words

Problem Statement

Learn how to diagnose and fix the rear window wiper not working on your Toyota RAV4 (2019-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.

Symptoms

•Rear window wiper does not activate when the switch is turned on
•No sound or movement from the wiper motor
•Rear washer fluid does not spray
•Dashboard warning lights may illuminate (if applicable)
•Wiper blades do not clear water effectively (if they were previously operational)

Diagnostic Steps

1
Inspect the wiper control switch for proper operation.
2
Check the fuse related to the rear wiper in the fuse box.
3
Use an OBD-II scanner to check for any relevant error codes.
4
Test the rear wiper motor for continuity using a multimeter.
5
Inspect wiring and connectors for corrosion or damage.
6
Check the rear washer fluid reservoir and pump function.

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
•Pliers
•Fuse puller

Parts Required

•Rear wiper motor (if faulty)
•Rear washer pump (if faulty)
•Replacement fuse (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the wiper control switch for proper operation.
2
Check the fuse related to the rear wiper in the fuse box.
3
Use an OBD-II scanner to check for any relevant error codes.
4
Test the rear wiper motor for continuity using a multimeter.
5
Inspect wiring and connectors for corrosion or damage.
6
Check the rear washer fluid reservoir and pump function.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to ensure safety during repairs.

2. Inspect and Replace the Fuse

Locate the fuse box, usually found 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; if it is blown, replace it with a new fuse of the same amperage.

3. Test the Rear Wiper Motor

Reconnect the battery.
Use a multimeter to test the motor:
- Disconnect the motor connector.
- Check for voltage at the connector when the wiper switch is activated.
If voltage is present but the motor does not operate, the motor may need replacing.

4. Replace the Rear Wiper Motor (if necessary)

Remove any trim or covers to access the wiper motor.
Unbolt the motor from its mount (typically requires a socket set).
Disconnect the wiring harness from the motor.
Install the new motor by reversing the removal steps.
Ensure it is securely fastened and reconnect the wiring harness.

5. Test Rear Washer Pump (if applicable)

Locate the rear washer pump, usually integrated with the motor or in the washer fluid reservoir.
Disconnect the washer pump connector.
Use a multimeter to check for voltage when the washer switch is activated.
If no voltage is present, further diagnose the switch or wiring; if voltage is present but the pump does not work, replace the pump.