See also:

Block the Wheel
Block the wheel that is diagonally opposite from the flat to keep the vehicle from rolling when the car is raised on the jack. ...

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

HORN
Press the pad on the steering wheel to sound the horn. AUDIO REMOTE CONTROL SWITCH The steering wheel may incorporate audio control buttons. NOTE: Do not operate audio remote control switches ...