Public Service Annoucement.
May not pertain to everyone.
There is plenty of misinformation out in the wild about the Slingshot and the perpetuating of same information.
Here's an example.
You just got that infamous catastrophic brake light...
What is your first thought?
I am going to guess...
brake pressure sensors bad.
Do you know the purpose of brake pressure sensors?
Going to save myself some typing with a link to wiki...
Brake Pressure Sensors ... wiki
Another factor for the light...
Air in one system, front versus rear.
The take away on this should be...
Don't assume that the brake pressure sensors have gone bad until you have verified the integrity of your hydraulic brake system.
Might want to help your friend check out their brake system rather than...
"Ah, you'll be fine. Your brake pressure sensors have probably gone bad."
Carry on...