See also:

Check spark plugs and ignition system
Inspect your spark plugs as described in section 7 and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way. ...

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

Air bag - advanced supplemental restraint system
* The actual air bags in the vehicle may differ from the illustration. (1) Driver’s front air bag (2) Passenger’s front air bag (3) Side impact air bag (4) Curtain air bag WARNING Even in vehi ...