HSA (Hill Start Assist) Features
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
Prevents the vehicle from rolling backwards when moving your foot from the brake pedal to the accelerator pedal while stopped on a hill. The control unit reads the angle of inclination from the Yaw rate lateral/longitudinal acceleration sensor, and that all four wheels are stopped, then it calculates the amount of fluid pressure required to keep the vehicle from rolling backward when the control unit sees the brake pressure decrease as the driver lifts his foot off of the brake pedal, and moves his foot to the accelerator pedal. The HSA also works when the vehicle is stopped on a downhill slope.