Toyota Prius c 2014 Owner's Manual page 68

1-3. Opening, closing and locking the doors
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Inside lock buttons
Locking the front doors from the outside without a key
Move the inside door lock button to the lock position.
STEP 1
Close the door.
STEP 2
Vehicles without a smart key system
The door cannot be locked if either of the front doors is open and
the key is in the engine switch.
Vehicles with a smart key system
The door cannot be locked if the "POWER" switch is in ACCES-
SORY or ON mode, or the electronic key is left inside the vehicle.
The key may not be detected correctly and the door may be locked.
66
Locks the door
Unlocks the door
The front doors can be opened
by pulling the inside handle
even if the lock buttons are in
the lock position.