Toyota Prius 2011 Manual page 159

CAUTION
When the vehicle is stopped
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Do not race the hybrid system.
If the vehicle is in any shift position other than "P" or "N" the vehicle may
accelerate suddenly and unexpectedly, and may cause an accident.
Do not leave the vehicle with the hybrid system on for a long time. 
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If such a situation cannot be avoided, park the vehicle in an open space
and check that exhaust fumes do not enter the vehicle interior.
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In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the "READY" indicator is on. Apply the
parking brake as necessary.
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If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
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Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
When the vehicle is parked
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Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and
plastic material of eye glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray over the
interior of the vehicle, and may also cause a short circuit in the vehi-
cle's electrical components.
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Always apply the parking brake, push the "P" position switch, stop the
hybrid system and lock the vehicle.
Do not leave the vehicle unattended while the hybrid system is operating.
2-1. Driving procedures
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