See also:

Additional safety precautions
• Never let passengers ride in the cargo area or on top of a foldeddown back seat. All occupants should sit upright, fully back in their seats with their seat belts on and their feet on the floor. ...

Operating door locks from inside the vehicle
With the door lock button • To unlock a door, push the door lock button (1) to the “Unlock” position. The red mark (2) on the button will be visible. • To lock a door, push the door lock button ...

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