For the rear seat
In order to use the cup holder, allow the armrest (A) to drop down.

See also:
Seat belts
To protect you and your passengers in the event of an accident, it is most important
that the seat belts be worn correctly while driving.
The front seat belts have a pretensioner system.
These bel ...
Driver’s seat belt reminder/warning lamp and display
Warning lamp
A tone and warning lamp are used to remind the driver to fasten the seat belt.
If the ignition switch is set to the “ON” position without the driver’s seat
belt being fasten ...
Ignition switch
[For vehicles equipped with keyless operation system]
For information on operations for vehicles equipped with the
keyless operation system, refer to “Keyless operation system: Engine switch”.
...
