Toyota 2012 Prius Owner's Manual page 583

5-2. Steps to take in an emergency
Interior Exterior
buzzer buzzer
Contin-
Once
uous
558
PRIUS PHV_OM_OM47818U_(U)
Warning message
(Displayed alternately)
(Flashes)
Correction
Details
procedure
The electronic
key has been
taken outside
Turn the
the vehicle and
"POWER"
the doors have
switch to
been locked
OFF and
without first
lock the
turning the
doors
"POWER"
again.
switch to OFF.
(vehicles with
entry function)