My Slingshot had the brake failure light. Dealer replaced pressure sensors and light is still there. They called Polaris. They told dealership they are aware of a problem with a current part number and maybe a date range of pressure switches.
They will be shipping out updated parts in around two weeks.
Now, I am not completly sure I got all this right. Maybe others can confirm. But it seems many people have continued to have a problem after having the repair. I hope this will be a final fix.
Not all good news to me, I am going on a 3500 mile trip before the parts get here. Looks like I may not be using my cruise control as much as I like.