See also:

Seat Cushion Height Adjustment (Driver's Seat only)
To raise or lower the front part of the seat cushion, turn the knob forward or rearward. ...

Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation. ...

Manual heating and air conditioning
The heating and cooling system can be controlled manually by pressing buttons or turning knob(s) other than the AUTO button. In this case, the system works sequentially according to the order of b ...