See also:

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

To decrease the cruising speed
Follow either of these procedures: o Push the -/SET switch and hold it. Your vehicle will gradually slow down. Release the switch at the speed you want to maintain. o Push the -/SET switch and r ...

Impact sensing door unlock system (if equipped)
All doors will be automatically unlocked when the impact is delivered to impact sensors while the ignition switch is ON. However, the doors may not be unlocked if mechanical problems occur with the ...