Toyota PRIUS Manual page 280

2-1. Driving procedures
 Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON
mode (the hybrid system is not operating) for more than an hour with the
shift position in P, the "POWER" switch will automatically turn off. However,
this function cannot entirely prevent the 12-volt battery from discharging. Do
not leave the vehicle with the "POWER" switch in ACCESSORY or ON mode
for long periods of time when the hybrid system is not operating.
 Sounds and vibrations specific to a hybrid vehicle
P. 59
Electronic key battery depletion

P. 143
 When the ambient temperature is low, such as during winter driving
conditions
The "READY" indicator may flash for a long time when the hybrid system is
starting. Driving will become possible once the "READY" indicator has illumi-
nated. Wait until the "READY" indicator has illuminated.
 Conditions affecting operation
P. 139
 Notes for the entry function
P. 140
If the hybrid system does not start

 The immobilizer system may not have been deactivated. (P. 190)
Contact any authorized Toyota dealer or repairer, or another duly quali-
fied and equipped professional.
The charging cable may be connected to the vehicle. (P. 111)

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