When using the rear center seat belt, the buckle with the "CENTER" mark must be used.
Hyundai Elantra AD (2016-2020) Service Manual: Driver Airbag (DAB) Module and Clock Spring Repair procedures
Removal
1.
Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2.
Remove the driver airbag module by putting in a flat tool (O5mm) into the guide hole and then press the spring.
3.
Release the connector locking pin, then disconnect the driver ...
Hyundai Elantra AD (2016-2020) Service Manual: Rear Wheel Speed Sensor Components and Components Location
Components
1. Front wheel speed sensor2. Front wheel speed sensor cable
...