Toyota 2013 Prius Owner's Manual page 34

4. Things you must know
Regenerative braking
■
In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the recharging of the
hybrid battery (traction battery).
The accelerator pedal is released while driving with the shift position in D
●
or B.
The brake pedal is depressed while driving with the shift position in D or
●
B.
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 is being displayed, the gasoline
engine may operate automatically in the following circumstances (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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