Toyota PRIUS ALPHA 2012 Quick Reference Manual page 505

5-1. Essential information
CAUTION
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Caution while towing
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Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive
stress on the emergency towing eyelets and the cables or chains. Always
be cautious of the surroundings and other vehicles while towing.
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Do not turn the "POWER" switch off.
This may lead to an accident as the front wheels will be locked by the
parking lock.
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If the hybrid system is off, the power assist for the brakes and steering will
not function, making steering and braking more difficult.
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Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing. This
may lead to accidents that cause serious injury or even death.
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