See also:

REMOTE FUEL-FILLER LID RELEASE
The fuel-filler lid must be opened from inside the vehicle by pulling up on the fuel-filler lid opener located on the front floor area on the left side of the car. NOTE: If the fuel-filler lid w ...

Horn
Press the pad on the steering wheel to sound the horn. ...

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