See also:

Locking with power door lock switch
Locking with power door lock switch Operating the power door lock switch will lock or unlock all the doors. The switches are located on the driver’s and front passenger’s door armrests. ...

Warning/indicator lights and audible reminders
...

Interior
The Sentra offers some innovative features for a compact car, including rear cupholders that can hold 32-ounce cups and 20-ounce bottles; high-mounted front-seatback pockets for backseat passenger ...