The instrument cluster display indicates which rear seat belts are being used.
[a343] - rear seat not occupied or seat belt not buckled
- rear seat belt buckled
The warning lamp lights up briefly when the ignition is switched on. The warning lamp lights up again briefly if the corresponding rear seat belt is buckled/unbuckled. If the seat belt is unbuckled while the vehicle is moving, you will also hear a warning tone.
Note
For further information on the seat belts Link.