Toyota 2015 Prius C Owner's Manual page 185

NOTICE
To prevent 12-volt battery discharge
■
Do not leave the engine switch in the "ACC" or "ON" position for long peri-
ods of time without the hybrid system on.
When starting the hybrid system
■
If the hybrid system becomes difficult to start, have your vehicle checked by
your Toyota dealer immediately.
4-2. Driving procedures
I n f o r ma t i o n P r o v i d e d b y :
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