Toyota 2007 Prius Owner's Manual page 15

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As the vehicle runs with both the gaso-
line engine and electric motor, you may
hear a motor sound coming from the
engine compartment.
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When the hybrid system is started or
stopped, you may hear a sound coming
from the hybrid battery in the luggage
compartment. However, this does not
indicate any trouble.
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If the "READY" light is on, you can
start even though the gasoline engine
may be off.
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When you shift the shift lever to "B"
and release it to its original position
and your foot from the accelerator ped-
al, engine braking will be applied. How-
ever, during high speed driving you
may feel that deceleration by engine
braking is less than that of ordinary
vehicle.
Be sure to put the hybrid transaxle in
"P" when parking.
In "N", the hybrid battery assembly is not
charged, even if the gasoline engine is
operating. You cannot run your vehicle if
the hybrid transaxle is left in "N" for a
long time because the hybrid battery as-
sembly will be discharged.
When you leave your vehicle, put the
hybrid transaxle in "P" and set the
parking brake. Be sure to carry the key
with you and lock all the doors.
If you leave the hybrid system in "ACC"
or "IG−ON", the hybrid system may not
start because the 12 volt battery will be
discharged.
If the vehicle is parked for a long time,
the hybrid battery will discharge gradually.
To keep the hybrid battery in good condi-
tion, drive the vehicle at least once every
several months for at least 30 minutes or
ten miles. If the hybrid battery becomes
fully discharged and the vehicle will not
start even with a jump−start to the 12 volt
battery, contact your Toyota dealer.
CAUTION
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When you leave your vehicle, be
sure to shut off the hybrid system.
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Be sure to put the hybrid transaxle
in "P" because the vehicle can start
with the "READY" light on and the
engine stopped (no engine sound
and vibration). When the "READY"
light is on, if you leave your ve-
hicle in shift position other than
"P" and "N", the vehicle will creep
and start abruptly with the accelera-
tor pedal being depressed by mis-
take. This may cause death or seri-
ous injury.
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