my Toyota Corolla E210 (2019-2024) airbag light is on, how to fix it?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the ignition is turned off.
• Disconnect the negative battery terminal to prevent accidental airbag deployment.

2. Inspect Wiring and Connectors

• Remove the driver's side and passenger's side lower trim panels to access airbag wiring.
• Visually inspect all connectors related to the airbag system for corrosion or damage.
• Reconnect any loose connectors and repair damaged wires using appropriate soldering techniques and heat shrink tubing.

3. Replace Faulty Components (if necessary)

• If any trouble codes indicate a specific airbag or sensor fault, replace the faulty component:
  • For seatbelt pretensioners, remove the seat and unbolt the pretensioner.
  • Install the new pretensioner and torque to manufacturer specifications.
• Reconnect all wiring and ensure secure connections.

4. Reconnect Battery and Reset System

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear all stored airbag trouble codes.
• Start the vehicle and check if the airbag warning light remains off.