why does my Toyota Highlander Third Generation (2014-2019) airbag light stay on

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is in a safe, flat area with the ignition off.
• Disconnect the negative battery terminal to prevent accidental deployment of the airbag.

2. Scan for Error Codes

• Use an OBD-II scanner to read the airbag system fault codes.
• Document any codes for further analysis.

3. Inspect Wiring and Connectors

• Remove any necessary panels to access the airbag system wiring.
• Visually inspect connectors for loose connections, broken wires, or visible corrosion.
• Clean or repair any damaged connections.

4. Check Airbag Sensor and Module

• Locate the airbag sensor and module (typically under the front seats or dashboard).
• Disconnect the sensor and inspect for corrosion or damage.
• Reconnect the sensor and check for any fault codes again.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear any stored airbag codes.
• Turn the ignition to the "ON" position (without starting the engine) and check if the airbag light goes off.