Toyota Prius Owner's Manual page 524

5-2. Steps to take in an emergency
Interior Exterior
buzzer buzzer
Contin-
Once
uous
524
PRIUS_OM_OM47A19E_(EE)
Warning message
(Displayed alternately)
(Flashes)
Correction
Details
procedure
The electronic
key has been
Turn the
taken outside
"POWER"
the vehicle and
switch to
the doors have
OFF and
been locked
lock the
without first
doors
turning the
again.
"POWER"
switch to OFF.