What are the typical problems with the tire pressure monitoring system in the 2020 Toyota Highlander...

Toyota Highlander Fourth Generation (2020-present)

Error Codes

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Difficulty

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Severity

4 min read

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Problem Statement

Learn about typical issues with the Tire Pressure Monitoring System (TPMS) in the 2020 Toyota Highlander, including symptoms, diagnostic steps, and repair instructions.

Affected Component

Tire Pressure Monitoring System (TPMS)

Symptoms

•TPMS Warning Light On
•Inaccurate Tire Pressure Readings
•TPMS Reset Failure
•Frequent Low Tire Pressure Alerts

Diagnostic Steps

1
Visual Inspection
2
Check Tire Pressure
3
Scan for Diagnostic Trouble Codes (DTCs)
4
Examine the TPMS Sensors

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

•Digital Tire Pressure Gauge
•OBD-II Scanner
•TPMS Tool
•Torque Wrench
•Tire Repair Kit (if necessary)
•Tire Changing Equipment (if necessary)
•Safety Glasses and Gloves

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Solution

Typical Problems with the Tire Pressure Monitoring System (TPMS) in the 2020 Toyota Highlander

The Tire Pressure Monitoring System (TPMS) in the 2020 Toyota Highlander can encounter several issues that may affect its performance. Below are the common symptoms, diagnostic steps, tools required, and repair instructions.

Common Symptoms

TPMS Warning Light On
- The TPMS warning light illuminates on the dashboard, indicating an issue with one or more tires.
Inaccurate Tire Pressure Readings
- The displayed tire pressure values may not reflect the actual pressures in the tires.
TPMS Reset Failure
- Attempts to reset the TPMS do not work, and the warning light remains illuminated.
Frequent Low Tire Pressure Alerts
- The system intermittently alerts for low tire pressure even when tires are properly inflated.

Tools Required

Digital Tire Pressure Gauge
OBD-II Scanner
TPMS Tool
Torque Wrench
Tire Repair Kit (if necessary)
Tire Changing Equipment (if necessary)
Safety Glasses and Gloves

Repair Instructions

1. Resetting the TPMS

If the TPMS warning light is on, follow these steps to reset the system:

Ensure All Tires are Properly Inflated
- Inflate all tires to the recommended PSI.
Turn the Ignition On
- Without starting the engine, turn the ignition key to the "ON" position.
Locate the TPMS Reset Button
- The reset button is usually located beneath the steering column or on the dashboard.
Press and Hold the Reset Button
- Press and hold the TPMS reset button until the TPMS light blinks three times, then release the button.
Drive the Vehicle
- Drive the vehicle for at least 10 minutes at speeds above 25 mph to allow the system to recalibrate.

2. Replacing TPMS Sensors

If the sensors are faulty, they may need to be replaced:

Remove the Tire
- Use a tire changing tool to safely remove the wheel from the vehicle.
Deflate the Tire
- Remove the valve core using a valve core tool to deflate the tire.
Remove the TPMS Sensor
- Unscrew the sensor from the wheel. Be careful to not damage the sensor or valve stem.
Install New TPMS Sensor
- Install the new TPMS sensor by following the manufacturer’s instructions. Ensure it is properly seated and tightened.
Reinflate the Tire
- Inflate the tire to the recommended pressure and install the valve core.
Reinstall the Tire
- Mount the tire back onto the vehicle and torque the lug nuts to the manufacturer’s specifications.
Recalibrate the TPMS
- Follow the TPMS reset procedure outlined above.

Conclusion

By following these diagnostic and repair steps, you can address common issues with the TPMS in the 2020 Toyota Highlander. Regular maintenance of tire pressure and prompt attention to warning lights can help ensure the system functions correctly. If problems persist, consulting a certified Toyota technician may be necessary.