how do I fix the windshield wipers not working on my Toyota Highlander Third Generation (2014-2019)?

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

554 words

Problem Statement

Learn how to diagnose and fix windshield wipers not working on Toyota Highlander (2014-2019). 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 starting any electrical work to prevent shorts or shock.

Symptoms

•Windshield wipers do not activate when switched on
•Wiper motor does not make noise when wipers are engaged
•Wiper blades remain stationary on the windshield
•No water spray from washer jets
•Blown fuse related to wiper system (if applicable)

Diagnostic Steps

1
Check the wiper fuse in the fuse box for continuity using a multimeter.
2
Inspect the wiper switch on the steering column for proper function.
3
Test the wiper motor by supplying direct power to it.
4
Examine the wiring harness for damage or loose connections.
5
Inspect the wiper relay for faults or failure.
6
Check the washer fluid reservoir and pump operation.

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

•Multimeter
•Jumper wires
•Socket set
•Screwdriver set
•Wrench set

Parts Required

•Wiper motor (if faulty)
•Wiper relay (if faulty)
•Wiper fuse (if blown)

Related Faults

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Diagnostic Steps

1
Check the wiper fuse in the fuse box for continuity using a multimeter.
2
Inspect the wiper switch on the steering column for proper function.
3
Test the wiper motor by supplying direct power to it.
4
Examine the wiring harness for damage or loose connections.
5
Inspect the wiper relay for faults or failure.
6
Check the washer fluid reservoir and pump operation.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the ignition is turned off.
Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect the Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Remove the wiper fuse (refer to the owner's manual for the exact location and fuse number).
Use a multimeter to check for continuity. If the fuse is blown, replace it with a fuse of the same amperage.

3. Test the Wiper Motor

Locate the wiper motor, typically found under the cowl panel near the windshield.
Disconnect the motor’s electrical connector.
Using jumper wires, connect the motor directly to the battery (positive to positive, negative to negative).
If the motor operates, the issue lies in the wiring or switch; if it does not, the motor may require replacement.

4. Check the Wiper Relay

Find the wiper relay in the fuse box or relay panel (refer to the owner's manual).
Swap it with another relay of the same type to test functionality.
If the wipers work with the swapped relay, replace the faulty relay.

5. Inspect Wiring and Connections

Visually inspect the wiring harness leading to the wiper motor for any signs of damage or corrosion.
Ensure all connectors are secure and free of rust. Repair or replace any damaged wiring as necessary.

6. Reassemble and Test

Reconnect all electrical connections and the battery terminal.
Test the wipers to ensure proper functionality.
If washer jets are not working, check the washer pump and reservoir for blockages or faults.