TOYOTA 2013 Prius PHV - Manual (Page 673)

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5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
CAUTION
■ If the hybrid system has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake
pedal harder to depress and the steering wheel heavier to turn. Decelerate
as much as possible before turning off the hybrid system.