Issue with Tesla Model Y Tire Pressure Monitoring System (TPMS)

Step 1: Visual Inspection

• Check Tire Condition: Inspect all tires for visible damage, punctures, or significant wear.
• Check Tire Inflation: Use a tire pressure gauge to measure the actual tire pressures. Compare these values to the recommended pressures (usually found on the driver’s door jamb).

Step 2: Software Check

• Check for Software Updates: Ensure the vehicle's software is up to date. Tesla frequently releases updates that may address TPMS issues.
• Use Tesla App or Touchscreen: Access the vehicle information through the Tesla app or the touchscreen to see if there are any alerts or diagnostic codes related to TPMS.

Step 3: Reset TPMS

• Reset TPMS in Settings: Navigate to the vehicle settings on the touchscreen, and look for the option to reset the TPMS. This can sometimes resolve sensor errors.

Step 4: Diagnostic Tool

• OBD-II Scanner: If the issue persists, connect an OBD-II scanner compatible with Tesla vehicles to check for any error codes related to the TPMS.

Tools Required

• Tire pressure gauge
• OBD-II scanner (Tesla compatible)
• Torque wrench (for wheel lug nuts)
• Tire inflation equipment (air compressor, if necessary)
• Laptop or tablet (for software updates, if needed)

Repair Instructions

Step 1: Tire Pressure Adjustment

1. Inflate or Deflate Tires: Adjust the tire pressures to match the manufacturer's recommendations.
2. Recheck Tire Pressures: After adjustments, verify the pressures again with the tire pressure gauge.

Step 2: Sensor Replacement (if necessary)

If the tire sensors are faulty, follow these instructions:

1. Remove the Tire:

   • Loosen the lug nuts on the wheel using a torque wrench.
   • Lift the vehicle using a jack and secure it with jack stands.
   • Remove the wheel.

2. Replace the TPMS Sensor:

   • Locate the TPMS sensor mounted on the valve stem inside the tire.
   • Use a TPMS service tool to remove the old sensor, following the specific tool instructions.
   • Install the new TPMS sensor, ensuring it is securely fastened.

3. Reinstall the Tire:

   • Place the wheel back onto the hub.
   • Hand-tighten the lug nuts, then use a torque wrench to tighten them to the manufacturer’s specifications (usually specified in the owner’s manual).

Step 3: Recalibration

1. Recalibrate TPMS:
   • After a tire or sensor replacement, recalibrate the TPMS using the vehicle settings on the touchscreen.
   • Follow on-screen instructions to complete the process.

Step 4: Final Check

1. Test Drive: Take the vehicle for a short drive (around 10-15 minutes) to allow the system to recheck tire pressures and confirm that the TPMS warning light is off.
2. Monitor TPMS Readings: Observe the tire pressure readings on the touchscreen for accuracy.

Conclusion

If the TPMS issue persists after following these steps, it may warrant a visit to a Tesla service center for further diagnostics. Advanced issues could involve wiring problems or failures within the vehicle's central control module.