Toyota Land Cruiser Prado 2013 Owner's Manual page 463

Heater idle up (if equipped)

This feature is used to boost heating effect in extremely cold condi-
tions when the vehicle is not moving.
Press the switch to increase
engine speed.
Press the switch again to return
the engine to the normal idle
speed. If you do not turn the
switch to off, the engine speed is
increased whenever the engine
is started.
Power heater (if equipped)

This feature is used to heat the engine coolant, speed up warming
of the cab in cold weather, and keep the cab warm.
Turns the power heater on/off
If you do not turn the switch to
off, the
increased whenever the engine
is started.
LC150_OM_OM60K29E_(EE)
6-1. Using the air conditioning system and defogger
engine speed is
464
6