FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
What should I check if my Toyota Highlander's dashboard lights are not working? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What should I check if my Toyota Highlander's dashboard lights are not working?

What should I check if my Toyota Highlander's dashboard lights are not working?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
549 words

Problem Statement

Learn how to diagnose and fix dashboard lights not working on Toyota Highlander (2020-present) with our step-by-step guide.

Affected Component
dashboard lights

Symptoms

  • •Dashboard warning lights are off or not illuminating.
  • •Instrument cluster displays (speedometer, fuel gauge, etc.) may not be lit.
  • •Other interior lights may also not be functioning.
  • •Possible dimming or flickering of lights.

Diagnostic Steps

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

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
  • •OBD-II scanner
  • •Fuse puller (or needle-nose pliers)
  • •Screwdrivers (Phillips and flathead)
  • •Flashlight for better visibility

Additional Information

Affected Component
dashboard lights
Difficulty
medium
Severity
medium
Tools Required
5 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
Issue: Dashboard Lights Not Working on Toyota Highlander (2020-present)
Tools Required
  • Multimeter
  • OBD-II scanner
  • Fuse puller (or needle-nose pliers)
  • Screwdrivers (Phillips and flathead)
  • Flashlight for better visibility

Repair Instructions

  1. Reset Dimmer Switch

    • If the dimmer switch is the issue, simply adjusting it can restore functionality.

  2. Replace Blown Fuse

    • Use the fuse puller to remove the blown fuse. Insert a new fuse of the same amperage into the fuse slot.
    • Recheck the dashboard lights for functionality.

  3. Battery Maintenance

    • If the voltage is low, charge the battery or replace it if it’s failing.
    • Ensure battery terminals are clean and tight.

  4. Clear Fault Codes

    • If any fault codes are present, clear them using the OBD-II scanner and check if the dashboard lights have returned to normal operation.

  5. Wiring Repair

    • If any damaged wiring is found, repair or replace the wiring as necessary. Secure all connections and ensure they are insulated from moisture or debris.

  6. Reassemble

    • Once repairs are made, reassemble any components that were removed for access, ensuring all screws and fasteners are secured.
Conclusion

If after performing these steps, the dashboard lights remain non-functional, it may indicate a more complex issue such as a failure in the instrument cluster or a deeper electrical fault. In such cases, it may be necessary to consult with a professional technician for further diagnosis and repair.