Help! 07 s80 v8 dstc, collision warning, blind spot, adaptive cruise all not working.

[FenFen]

So the other day my dstc service light came on then went away by itself, but came back the following day and with it the collision warning system and the blind spot function. Idk if they are related or not. Car runs and drives perfect but it's sure nice to be able to use the cruise control lol. Anyone else have these issues? 07 Volvo s80 v8 aww 140,xxx miles