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Message: <blockquote data-quote="tkw" data-source="post: 335594" data-attributes="member: 830">Yep, it's the sensor mat that is causing the the airbag light to come on. The mat is suppose to 'save' you the cost of replacing 2 airbags should you have the misfortune of triggering them in an accident while driving alone.  It senses if someone is sitting on it and triggers the passenger airbag in the event of a collision. For those with a faulty mat whose is not prepared to spend the money on a new one, not to mention ripping their seat to access the old piece, the way to get around it is to 'fool' it into thinking that someone is occupying the seat, thereby bypassing the airbag warning light, but you will trigger both airbags, in an accident. But here is the teaser, you pay from your own pocket for the sensor while the deflated airbags are mostly taken care of by insurance companies. Fooling it consist of 2 resistors and a diode connected to the wires that formerly go to the sensor mat and the cost is a few bucks, apart from having the fault codes erased by the mechanic.  I did that for my E46 (not sure about E60 though).</blockquote>