In 2011, there are two further enhancements to the Terrain Response system: Hill Start Assist and Gradient
Acceleration Control. Hill Start Assist retains the initial driver-generated
brake pressure, long enough for the foot to move from brake pedal to throttle
without the car rolling backwards. The brake is released after a sufficient time
has elapsed or when the engine is supplying enough torque to move the car up the
hill. Gradient Acceleration Control is
designed to provide safety cover on severe gradients when the driver does not
have Hill Descent Control engaged.
