Toyota 2013 Prius Owner's Manual page 67

1-1. Plug-in hybrid system
Refilling fuel
■
Plug-in hybrid vehicles can be driven using electricity charged from an exter-
nal power source, however the gasoline engine that is provided on board as
an auxiliary power source and as a power source for driving in HV mode
needs to be filled with fuel. Check the fuel amount and refill immediately
when the fuel level becomes low. (→P. 174)
Gasoline engine operation in EV mode
■
Even if there is a sufficient amount of electricity remaining in the hybrid bat-
tery (traction battery) and EV driving range (→P. 58, 268) is being displayed,
the gasoline engine may operate automatically in the following circum-
stances (EV driving will be returned to automatically after EV driving
becomes possible again):
When the heater etc. is in use.
●
When the temperature of the hybrid system is high.
●
The vehicle has been left in the sun, driven on a hill, driven at high
speeds, etc.
When the temperature of the hybrid system is low.
●
The vehicle has been left in temperatures lower than about 32 °F (0 °C)
for a long period of time etc.
When power is needed temporarily, for example when accelerating sud-
●
denly.
When vehicle speed is more than approximately 62 mph (100 km/h).
●
When the accelerator pedal is depressed firmly or the vehicle is on a hill
●
etc.
When the outside temperature is low (less than 14 °F [-10 °C])
●
The gasoline engine may also operate in circumstances other than those
listed above, depending on conditions.
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PRIUS PHV_OM_OM47787U_(U)