Originally Posted by laflecrp
According to the manual the hill start assist is only active when the grade is 6% or greater
Personally, I think the manual is wrong. Or the the feature is implemented incorrectly.
Incidentally, it DOES seem to work like you say on the 2011 JK that I've been driving. Played a little with it yesterday, and on an incline going up-hill, let the brake off, and after about 3 seconds, you could feel the brakes disengage and the Jeep started to roll backwards. Level, thereabouts, let off the brake, and the Jeep immediately started to roll forward. But there was a NOTICEABLE difference in HSA on vs. HSA off in the JGC, on level ground.