See also:

Lower Vehicle and Tighten Nuts
Lower the car to the ground by turning the wheel nut wrench counterclockwise. Then position the wrench as shown in the drawing and tighten the wheel nuts. Be sure the socket is seated completely ...

Air Conditioning Switch
The air conditioning is turned on by pushing the A/C button on the heating/air conditioning control panel. ...

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