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How can I resolve the problem of my 2020 Highlander's key fob not working? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How can I resolve the problem of my 2020 Highlander's key fob not working?

How can I resolve the problem of my 2020 Highlander's key fob not working?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
1 hour
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
615 words

Problem Statement

Learn how to troubleshoot and repair key fob issues on your 2020 Toyota Highlander with our step-by-step guide.

Affected Component
Key Fob
Estimated Time
1 hour

Symptoms

  • •Key fob does not unlock or lock the doors.
  • •Remote start not functioning.
  • •Key fob not responding despite pressing buttons.
  • •Warning light on the dashboard indicating a key fob issue.

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

  • •Small flat-head screwdriver or a coin
  • •Replacement CR2032 battery
  • •Multimeter

Additional Information

Affected Component
Key Fob
Estimated Time
1 hour
Difficulty
medium
Severity
medium
Tools Required
3 items

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Key Fob Not Working on 2020 Toyota Highlander: Troubleshooting and Repair Steps

Repair Instructions
Replacing the Key Fob Battery
  1. Open the key fob using the flat-head screwdriver or coin.
  2. Remove the old battery and replace it with a new CR2032 battery.
  3. Ensure proper orientation of the new battery.
  4. Reassemble the key fob casing securely.
Reprogramming the Key Fob
  1. Follow the steps outlined in the reprogramming section above.
  2. Ensure to test the key fob after reprogramming to confirm functionality.
If All Else Fails
  • Replace the Key Fob: If the above steps do not resolve the issue, purchase a new key fob from a Toyota dealership or a certified locksmith. Follow the dealership's instructions for programming the new fob to your vehicle.
Final Notes
  • Always consult your vehicle’s owner manual for specific instructions related to your model.
  • If problems persist, it may be necessary to consult a professional technician or Toyota dealership for further diagnosis and repair of the keyless entry system.