The warning lamp  / lights up briefly when the ignition is switched on.

If a rear seat belt is buckled/unbuckled, the corresponding indicator lamp lights up briefly.

- If the indicator lamp lights up briefly, the corresponding rear seat is not occupied or the seat belt is not buckled. If the seat belt is unbuckled while the vehicle is moving, you will also hear a warning tone.

- If the indicator lamp lights up briefly, the seat belt has been fastened.