Hyundai Motor America has become the first car maker to recall some models because newly engineered "smart" airbags required in some 2004 models didn't perform as intended, Automotive News reported. According to the paper, Hyundai said the problem was minor and fixed easily - it found that sensors in the passenger seats of 2004 Elantras would turn off the passenger airbag improperly when an adult was present if the adult sat with his or her weight off the centre of the seat, the report said.