Toyota 2013 Prius Owner's Manual page 80

1-1. Plug-in hybrid system
Condition Display
1
When the vehicle is powered by
the electric motor (traction
motor)
When the vehicle is powered by
both the gasoline engine and the
electric motor (traction motor)
When the vehicle is powered by
the gasoline engine
53
PRIUS PHV_OM_OM47787U_(U)