on my 2014 900xp when the voltage regulator went to hell and was sometimes over charging and sometimes not charging it would cause the power steering to kick out and other weird things. On the 900s the voltage regulator and fuel pump both go out around 9 to 10k miles like clockwork.
Dad had a 2016 1000xp, was a fine machine till it started throwing misfire codes and running weird at times. Changed belt, spark plugs, O2 sensor. finally figured out it was the motor that was shot. dealer claimed dirt had gotten around the air filter and smoked the engine. I really don't think that was the cause as we clean and replace air filter often. Anyway Dad put a rebuilt engine in and traded it off on a new 1000 NorthStar with heat and air. Pretty nice but I don't think I'd ever spend the money to have AC in a utv. I like driving with the windows open.