FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
How can I fix the malfunctioning windshield washer system in my Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How can I fix the malfunctioning windshield washer system in my Toyota Highlander?

How can I fix the malfunctioning windshield washer system in my Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
1-2 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
626 words

Problem Statement

Learn how to diagnose and repair the windshield washer system in your Toyota Highlander with step-by-step instructions.

Affected Component
windshield washer system
Estimated Time
1-2 hours

Symptoms

  • •No Washer Fluid Dispensing
  • •Weak Spray
  • •Noisy Pump
  • •Fluid Leaks

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

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
  • •Funnel
  • •Pin or fine wire
  • •10mm socket and ratchet
  • •Screwdriver set
  • •Replacement washer pump
  • •Hose repair kit or new hoses
  • •Windshield washer fluid

Additional Information

Affected Component
windshield washer system
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
8 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation

Fixing the Malfunctioning Windshield Washer System in a Toyota Highlander (2020-present, XU70)

Tools Required
  • Multimeter
  • Funnel
  • Pin or fine wire (for unclogging nozzles)
  • 10mm socket and ratchet (for pump removal if necessary)
  • Screwdriver set (for any panel removals)
  • Replacement washer pump (if needed)
  • Hose repair kit or new hoses (if needed)
  • Windshield washer fluid
Repair Instructions
Step 1: Refill Washer Fluid
  1. Open the hood.
  2. Locate the windshield washer fluid reservoir (usually marked with a windshield/water symbol).
  3. Using a funnel, fill the reservoir with washer fluid to the full line.
Step 2: Check and Clear Nozzles
  1. Activate the washer system.
  2. Inspect the nozzles for fluid spray. If no spray is coming out:
    • Use a pin to clear any blockage in the nozzles.
    • If blocked, try spraying compressed air to force out debris.
Step 3: Test and Replace Washer Pump (if necessary)

  1. Disconnect the electrical connector from the washer pump.

  2. Set the multimeter to the DC voltage setting.

  3. Activate the washer switch and probe the pump connector.

    • If voltage is present (around 12V), proceed to pump replacement.
    • If no voltage, check the washer switch and related wiring.

  4. To replace the washer pump:

    • Locate the washer pump at the bottom of the reservoir.
    • Remove the 10mm bolts using a socket and ratchet.
    • Disconnect the hose from the pump and remove the pump.
    • Install the new washer pump by reversing these steps.
    • Reconnect the hose and electrical connector.
Step 4: Inspect and Replace Hoses (if necessary)
  1. Follow the hoses from the pump to the nozzles.
  2. Look for cracks or loose connections.
  3. If any hose is damaged, use a hose repair kit or replace the entire hose.
Step 5: Final Testing
  1. Refill the washer fluid reservoir if it was drained during the repair.
  2. Activate the windshield washer system again to check for proper operation.
  3. Ensure that fluid is spraying evenly across the windshield.
Step 6: Reassemble and Clean Up
  1. Close the hood securely.
  2. Clean any spilled washer fluid and ensure all tools are removed from the engine bay.
Conclusion

Your windshield washer system should now be functioning correctly. If problems persist, consider consulting a professional technician for further diagnostics, as there may be issues with the electrical system or the control module.