Magnuskk

I did 4 things and the noise is almost completely gone. 1)Put some tube in the inner side of the rubber 2)put a smaller diameter tube on the outer side of the rubber. 3)Sealed the holes on the gusset (behind the tweeter trim) 4) Adjusted the window to be as high up as possible but still be able to open the door: I will replace the gussets at some point but the bove things have reduced noise up to 90% even at high speeds

If the light is on the airbag will not work. The system is disabled if the light is on and i think it would not be wise to ignore it. My bet is that you have the very common issue of the seat connectors. All i do when it comes up every couple of months is to unplug the connectors under the seat, spray them with some contact cleaner and re-plug and they work fine for another couple of months! 10 minute job at the most!!!! It is a common issue on subarus. Here are the connectors: