My HAH brake mode just pulls
My HAH brake mode just pulls down the speed to much, even on a 8% grade hill so I just use the brakes that do the same thing, when the battery display shows 100% the car will not brake at all with the electric motor, guess there is no place for the energy to go. I have no clue about the hill assist but the active stability works very well, you have to work hard to upset the cars handling. This is by far the nicest car I have ever owned but my wife always has it so I don't get to enjoy it much.