Go to the store and get two or three gallons of milk/soda/water; put them on the passenger seat and watch what the display does.

In my X it always indicates that the passenger airbag has been disabled.

I think when I once shopped for a little more than that, it took me a while to figure out why me seatbelt chime kept going off.

__________________
2006 X5 Sport 4.4i