1. Start the engine.
2. Set the mode to the desired position.
To improve the effectiveness of heating and cooling;
- Heating: 
- Cooling: 
3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on.

Manual climate control system
Mode selectionHyundai Tucson (LM) 2010-2015 Owners Manual: Checking the amount of air conditioner refrigerant and compressor lubricant
WARNING
Because the refrigerant is at very high pressure, the air conditioning system
should only be serviced by trained and certified technicians. It is important that
the correct type and amount of oil and refrigerant is used, otherwise damage to
the vehicle and personal injury may occur. ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Oil hydraulic Motor(Actuator) Description and Operation
Description
The 4WD ECM controls the Pump Motor Pump (Actuator) to
generating an oil pressure. The pressure engages a multiple disk clutch
to transfer torque to the rear wheels. The torque to the rear wheels
varies according to the pressure on the clutch. ...