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How to fix the malfunctioning tire pressure monitoring system in a 2021 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How to fix the malfunctioning tire pressure monitoring system in a 2021 Toyota Highlander?

How to fix the malfunctioning tire pressure monitoring system in a 2021 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and repair the tire pressure monitoring system (TPMS) in your 2021 Toyota Highlander with detailed steps and required tools.

Affected Component
Tire Pressure Monitoring System (TPMS)
Estimated Time
2-3 hours

Symptoms

  • •TPMS warning light is illuminated on the dashboard
  • •Displayed tire pressure may be inaccurate
  • •Warning light may flash intermittently

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

  • •Tire pressure gauge
  • •OBD-II scanner
  • •TPMS tool (if available)
  • •socket set
  • •TPMS reset tool (optional)
  • •tire iron
  • •jack
  • •TPMS sensor replacement kit (if sensors are faulty)
  • •TPMS programming tool (if sensors were replaced)

Additional Information

Affected Component
Tire Pressure Monitoring System (TPMS)
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
9 items

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Fixing the Malfunctioning Tire Pressure Monitoring System (TPMS) in a 2021 Toyota Highlander

Step 1: Verify the Symptoms

  • Check the Dashboard: Confirm that the TPMS warning light is illuminated. If it's flashing, it indicates a malfunction in the system.

Step 2: Tire Inspection

  • Visual Inspection: Ensure all tires are properly inflated according to the specifications located on the driver’s side door jamb.
  • Check for Damage: Look for visible damage, punctures, or irregular wear on each tire.

Step 3: Check Tire Pressure

  • Tools Required: Tire pressure gauge.
  • Action: Measure the tire pressure in all four tires. Ensure they meet the manufacturer's recommended pressure.

Step 4: Scan for Error Codes

  • Tools Required: OBD-II scanner.
  • Action: Connect the OBD-II scanner to the vehicle’s diagnostic port (usually under the dashboard near the steering column). Retrieve any trouble codes that may indicate issues with the TPMS.

Step 5: Inspect TPMS Sensors

  • Tools Required: TPMS tool (if available), socket set.
  • Action: Check the TPMS sensors for proper installation and functionality. This may require removing the tires or using a special TPMS tool to read the sensor data.
Repair Instructions

Step 1: Inflate Tires

  • If any tires are under-inflated, fill them to the recommended pressure using an air compressor.

Step 2: Reset the TPMS

  • Tools Required: TPMS reset tool (optional).
  • Action:
    1. Turn the ignition to the "ON" position without starting the engine.
    2. Press the TPMS reset button, typically located beneath the steering column or in the glove box. Hold it until the TPMS light blinks three times, then release it.
    3. Start the vehicle and allow it to run for about 20 minutes for the system to recalibrate.

Step 3: Replace TPMS Sensors (if necessary)

  • Tools Required: Tire iron, jack, TPMS sensor replacement kit (if sensors are faulty).
  • Action:
    1. Safely lift the vehicle using a jack and secure it with jack stands.
    2. Remove the wheel using the tire iron.
    3. Unbolt the old TPMS sensor from the wheel and replace it with a new sensor from the replacement kit.
    4. Reinstall the wheel and lower the vehicle.

Step 4: Reprogram TPMS Sensors (if necessary)

  • Tools Required: TPMS programming tool (if sensors were replaced).
  • Action:
    1. Follow the manufacturer's instructions for reprogramming the TPMS sensors. This might involve driving the vehicle for a certain distance or using a scan tool to program each sensor ID.

Step 5: Check for Error Codes Again

  • Use the OBD-II scanner to check if any error codes remain after repairs. Clear the codes if necessary.
Final Steps
  1. Test Drive: Take the vehicle for a short test drive to ensure that the TPMS warning light remains off and that the system is functioning correctly.
  2. Recheck Tire Pressure: After the test drive, recheck the tire pressures to ensure they are still within recommended levels.
Conclusion

By following these detailed steps, you should be able to diagnose and repair the malfunctioning TPMS in your 2021 Toyota Highlander. Always remember to prioritize safety when working on vehicles and consult the vehicle's service manual for specific specifications and additional information.