Toyota 2013 Prius Owner's Manual page 318

2-3. Operating the lights and windshield wipers
Headlight switch
The headlights can be operated manually or automatically.
Turning the end of the lever turns on the lights as follows:
Type A
292
PRIUS PHV_OM_OM47787U_(U)
The headlights, park-
ing lights and so on
turn on and off auto-
matically (when the
"POWER" switch is
in ON mode).
The side marker,
parking, tail, license
plate and instrument
panel lights turn on.
The headlights and
all the lights listed
above turn on.
The daytime running
lights turn off.