how to fix the windshield wipers not working on Toyota Highlander Third Generation (2014-2019)

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

540 words

Problem Statement

Learn how to diagnose and fix windshield wipers not working on Toyota Highlander (2014-2019). Step-by-step guide with symptoms, tools, and solutions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shocks or shorts.
•Allow the engine to cool before working near the wiper motor area if it has been running.

Symptoms

•Windshield wipers do not operate at all
•Wipers are stuck in one position
•Intermittent wiper function fails to activate
•Wiper blades do not move when activated
•Washer fluid does not spray when the wipers are activated

Diagnostic Steps

1
Inspect the wiper switch for proper function by checking for any visible damage or wear.
2
Use an OBD-II scanner to check for any fault codes related to the wiper system.
3
Test the wiper motor by applying direct power to it from the battery to see if it operates.
4
Check the fuse for the windshield wipers using the fuse box diagram located in the owner's manual.
5
Inspect the wiring harness for any signs of damage or corrosion that may disrupt electrical flow.

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
•Socket set
•Fuse puller
•Screwdriver set
•Wire crimping tool

Parts Required

•Replacement wiper motor (if faulty)
•Wiper fuse (if blown)
•Wiper blades (if worn)

Related Faults

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Diagnostic Steps

1
Inspect the wiper switch for proper function by checking for any visible damage or wear.
2
Use an OBD-II scanner to check for any fault codes related to the wiper system.
3
Test the wiper motor by applying direct power to it from the battery to see if it operates.
4
Check the fuse for the windshield wipers using the fuse box diagram located in the owner's manual.
5
Inspect the wiring harness for any signs of damage or corrosion that may disrupt electrical flow.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the negative terminal of the battery to ensure safety while working on electrical components.

2. Check and Replace the Wiper Fuse

Locate the fuse box under the dashboard on the driver's side.
Identify the wiper fuse using the diagram on the fuse box cover.
Remove the fuse with a fuse puller and inspect it for continuity.
If blown, replace it with a new fuse of the same amperage (typically 20A for wipers).

3. Inspect and Replace the Wiper Motor

Remove the wiper arms by unscrewing the retaining nuts using a socket set.
Carefully pull off the wiper arms and set them aside.
Remove the plastic cover from the wiper motor area to access the motor.
Unplug the electrical connector from the wiper motor.
Remove the mounting bolts securing the wiper motor and take out the motor.
Install the new motor by reversing the removal steps, ensuring proper alignment.

4. Test the Wiper System

Reconnect the negative battery terminal.
Activate the wipers to ensure they function correctly.
If applicable, check the washer fluid spray to ensure it works properly.