How do i reset the 2005 BMW Z4 airbag light?

To reset the airbag light turn the 2005 BMW Z4 on and make sure the air bag light is on. Next wait seven seconds, then turn it off. Now repeat this two more times and it should stay off. The purpose of an airbag is to help the passenger in the car reduce their speed in collision without getting injured. An airbag provides a force over time. This is known as impulse. The more time the force has to act on the passenger to slow them down, the less damage caused to the passenger.Some cars have up to nine airbags, though there's no actual MINImum requirement as they are officially classified as supplementary safety equipment and aren't mandatory, like seatbelts. Front passenger airbags were later introduced and fitted into the dashboard.