FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Why is the dashboard showing a warning light related to the parking brake in my 2020 Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/Why is the dashboard showing a warning light related to the parking brake in my 2020 Highlander?

Why is the dashboard showing a warning light related to the parking brake in my 2020 Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
2-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
589 words

Problem Statement

Learn how to diagnose and repair the parking brake warning light issue in your 2020 Toyota Highlander with step-by-step instructions.

Affected Component
parking brake system
Estimated Time
2-3 hours

Symptoms

  • •Warning light illuminated on the dashboard indicating a parking brake issue.
  • •The parking brake may feel stuck or not fully disengaged.
  • •The vehicle may exhibit unusual noises when moving.
  • •The brake warning light may also be on, indicating an issue with the braking system.

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7

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
  • •Basic hand tools (screwdrivers, sockets)
  • •Multimeter (for electrical testing)
  • •Brake fluid (if needed)
  • •Safety gloves and goggles
  • •Vehicle lift or jack and jack stands (for undercarriage access)

Additional Information

Affected Component
parking brake system
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
6 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

Diagnosis and Repair of Parking Brake Warning Light in 2020 Toyota Highlander

Tools Required
  • OBD-II Scanner
  • Basic hand tools (screwdrivers, sockets)
  • Multimeter (for electrical testing)
  • Brake fluid (if needed)
  • Safety gloves and goggles
  • Vehicle lift or jack and jack stands (for undercarriage access)
Repair Instructions
Step 1: Check and Refill Brake Fluid
  1. Open the hood and locate the brake fluid reservoir.
  2. If the brake fluid is low, refill it with the appropriate type of brake fluid (check the owner’s manual for specifications).
  3. Close the reservoir cap securely.
Step 2: Inspect and Repair Parking Brake Switch
  1. Remove the center console cover to access the parking brake switch.
  2. Disconnect the wiring harness from the switch.
  3. Use a multimeter to test the switch continuity. It should show continuity when the parking brake is released.
  4. If the switch is faulty, replace it with a new one.
Step 3: Adjust the Parking Brake
  1. If the parking brake is loose, locate the adjustment mechanism, which is typically found under the vehicle.
  2. Use a wrench to tighten the adjustment nut on the parking brake cable. Ensure that the parking brake lever has a proper engagement point (typically 3-5 clicks).
  3. Test the parking brake by engaging and releasing it several times.
Step 4: Clear Fault Codes
  1. Use the OBD-II scanner to clear any fault codes from the vehicle’s computer.
  2. Turn the ignition off and then back on to reset the warning lights on the dashboard.
Step 5: Test Drive
  1. After performing all checks and repairs, take the vehicle for a test drive.
  2. Observe the dashboard for any warning lights; ensure the parking brake engages and disengages smoothly.
Conclusion

If the parking brake warning light remains illuminated after completing these steps, it may indicate a more serious issue that requires professional diagnosis. In such cases, consult a certified Toyota technician for further inspection and repair.