Hydraulic Brake Assist
WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
Brake Assist is programmed into the ESC system. During a panic stop, a pressure sensor determines when the driver is doing so by measuring the brake pedal pressure application rate. A high rate of pedal pressure application causes the ESC system to apply maximum available pressure to the brakes and the vehicle stops as quickly as available traction will allow.