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How do I fix a malfunctioning key fob for my 2020 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How do I fix a malfunctioning key fob for my 2020 Toyota Highlander?

How do I fix a malfunctioning key fob for my 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and fix a malfunctioning key fob for your 2020 Toyota Highlander with detailed steps and required tools.

Affected Component
key fob
Estimated Time
1-2 hours

Symptoms

  • •Key fob buttons (lock, unlock, trunk release) are unresponsive.
  • •Indicator light on the key fob does not illuminate when buttons are pressed.
  • •Range of the key fob is significantly reduced.
  • •Vehicle does not recognize the key fob when trying to start.

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 flathead screwdriver
  • •CR2032 battery
  • •Vehicle ignition key
  • •owner’s manual
  • •Visual inspection
  • •multimeter

Additional Information

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

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Fixing a Malfunctioning Key Fob for 2020 Toyota Highlander

Symptoms of a Malfunctioning Key Fob:

  • Key fob buttons (lock, unlock, trunk release) are unresponsive.
  • Indicator light on the key fob does not illuminate when buttons are pressed.
  • Range of the key fob is significantly reduced.
  • Vehicle does not recognize the key fob when trying to start.
Repair Instructions

If you’ve identified that the key fob is faulty and needs repair or replacement, follow these steps:

  1. Order a Replacement Key Fob:

    • Obtain a new key fob from a Toyota dealer or an authorized locksmith. Ensure it is compatible with the 2020 Toyota Highlander.

  2. Program the New Key Fob:

    • Follow the same reprogramming steps outlined earlier to program the new key fob to your vehicle.

  3. Test the New Key Fob:

    • After programming, test all functions (lock, unlock, trunk release) at various distances to ensure proper operation.

  4. Secure the Old Key Fob:

    • If you have a functioning back-up key fob, store it in a safe place in case of future issues.
Conclusion

By following these detailed steps, you should be able to diagnose and potentially repair a malfunctioning key fob for your 2020 Toyota Highlander. If problems persist, seeking professional assistance is recommended to ensure your vehicle's keyless entry system is functioning properly.