Press the OFF button to turn off the air climate control system. However, you can still operate the mode and air intake buttons as long as the ignition switch is in the ON position.
Hyundai Tucson (LM) 2010-2015 Service Manual: Description and Operation
Description
System Overview
The System offers the following features:
-
Human machine interface through a 1-stage button, for terminal switching and engine start.
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Control of external relays for ACC / IGN1 / IGN2 terminal switching and STARTER, without use of mechanical ignition switch ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Pressure Sensor Description and Operation
Description
The 4WD ECU makes a Motor Pump(Actuator) turn round for
generating an oil pressure. And then it presses a multiple disk clutch
and transfers the generated torque into rear wheels. Its torque value
varies according to a pressure status. ...