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How do I resolve issues with the key fob not working on my 2020 Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How do I resolve issues with the key fob not working on my 2020 Highlander?

How do I resolve issues with the key fob not working on my 2020 Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
1-2 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
555 words

Problem Statement

Learn how to troubleshoot and repair issues with the key fob not working on your 2020 Toyota Highlander with these detailed steps.

Affected Component
key fob
Estimated Time
1-2 hours

Symptoms

  • •Key fob fails to unlock/lock doors.
  • •Key fob does not start the engine.
  • •Indicator light on the key fob is unresponsive.
  • •Vehicle responds intermittently to the key fob.

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

  • •Small Phillips screwdriver
  • •flathead screwdriver or coin
  • •Vehicle’s ignition key
  • •OBD-II scanner

Additional Information

Affected Component
key fob
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
4 items

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Key Fob Not Working on 2020 Toyota Highlander: Troubleshooting and Repair Steps
Repair Instructions
  1. Replace Key Fob Battery

    • Follow the battery replacement steps outlined in the diagnostic section.
  2. Reprogram Key Fob

    • Follow the reprogramming steps outlined above if the fob doesn't respond after replacing the battery.
  3. Replace Key Fob

    • If the fob is damaged or inoperative after battery replacement and reprogramming:
      • Obtain a new key fob from a Toyota dealership or an authorized dealer.
      • Follow the programming steps provided above to pair the new fob with your vehicle.

Additional Tips

  • Always keep a spare key fob and battery on hand.
  • Ensure that the key fob is cleaned regularly to avoid dirt buildup affecting performance.
  • If the problem persists after these steps, consider consulting a professional technician or your local Toyota dealer for advanced diagnostics and repairs.

By following these detailed steps, you should be able to diagnose and resolve the key fob issues for your 2020 Toyota Highlander effectively.