how to troubleshoot TPMS errors in my BMW 3 Series G20/G21 (2019-2024)

Solution

1. Preparation

• Gather tools and parts needed.
• Tools Required: OBD-II scanner, tire pressure gauge, TPMS tool (if available), jack and jack stands, torque wrench.
• Parts Required: Replacement TPMS sensors (if faulty), valve stems (if damaged), tire sealant (if needed for punctures).
• Safety Warnings: Ensure vehicle is on a flat surface and engage the parking brake before lifting.

2. Check and Adjust Tire Pressures

• Sub-steps:
  1. Remove valve caps from all tires.
  2. Use the tire pressure gauge to check the pressure of each tire.
  3. Inflate or deflate tires to the manufacturer-recommended pressure levels (usually found on the driver’s door jamb).
  4. Replace valve caps securely after adjustment.

3. Replace Faulty TPMS Sensors

• Sub-steps:
  1. Lift the vehicle using a jack and secure it with jack stands.
  2. Remove the wheel corresponding to the faulty sensor.
  3. Detach the tire from the rim using a tire machine or manually if equipped.
  4. Remove the old TPMS sensor from the valve stem and replace it with the new sensor, ensuring it is properly seated.
  5. Reassemble the tire onto the rim and inflate it to the correct pressure.
  6. Reinstall the wheel onto the vehicle and torque the lug nuts to the manufacturer’s specifications (typically around 90-120 Nm).

4. Reset TPMS

• Sub-steps:
  1. Turn on the ignition without starting the engine.
  2. Access the TPMS reset option via the infotainment system or dashboard settings.
  3. Follow the prompts to complete the reset process.
  4. Drive the vehicle for a short distance to allow the system to recalibrate.