Toyota 2013 Prius Owner's Manual page 422

3-5. Other interior features
Seat heaters
The seat heaters can be used when
■
The "POWER" switch is in ON mode.
When not in use
■
Turn the seat heater off.
PRIUS PHV_OM_OM47787U_(U)
Heats the left front seat
Heats the right front seat
HI: Strong
LO: Weak
The indicator light of the side you
pressed ("HI" or "LO") comes on.
To stop operation, gently press
the side of the button opposite the
side that was pressed.
The switch will return to its neutral
position and the indicator light will
go out.
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