Toyota 2012 Prius Owner's Manual page 157

1-4. Opening, closing and locking the doors
■
Conditions affecting operation
→P. 119
■
Electronic key battery depletion
→P. 123
■
To operate the system properly
Make sure to carry the electronic key when operating the system.
Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operate properly.
(The door lock prevention may not operate.)
■
Note for the smart key system
●
Even when the electronic key is within the effective range (detection
areas), the system may not operate properly.
For example, the electronic key is on the instrument panel, luggage
cover, floor or in the door pockets or glove box when the hybrid system is
started or "POWER" switch modes are changed.
●
Even if the electronic key is not inside the vehicle, it may be possible to
start the hybrid system if the electronic key is near the window.
128
PRIUS PHV_OM_OM47818U_(U)