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Re: bmw 323 airbag light
This means there is a faulty component. To reset the light in the first instance is a god idea but if it come on again then you need to have the code read to see which component needs to be replaced. In most cases its the seat belt tensioner that needs replacing due to wear and tear.
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The airbag is removed by 4 torx screws from the back side. Disconnect the battery before removing the airbag or the airbag light will stay on and you will have to pay the dealer a bunch of money to reset it. Don't reconnect the battery until the airbag is replaces and the electrical connection is in place. Once the airbag is off, there is a 22 mm nut that holds the wheel on. After you take the nut off mark the shaft and wheel with a grease pencil so you know exactly how to put it back on or you will be driving crooked later. Then the wheel just slips of with a tug.
something in the airbag system is at fault. it could be the airbag(s) itself or any of the sensors that detect a crash to deploy the airbag. i would really take it into BMW and have it checked & repaired. the airbag(s) will not deploy with this light on so your safety is at risk if you are ever in an accident..