See also:

Turning off cruise control
Press OFF to turn off the cruise control. Note: When you turn off the cruise control or the ignition, your cruise control set speed memory is erased. ...

Driving on hilly or sloping terrain
Although natural obstacles may make it necessary to travel diagonally up or down a hill or steep incline, you should always try to drive straight up or straight down. Note: Avoid driving crosswise ...

Low speed automatic cancellation
ACC is not functional at vehicle speeds below 18 mph (30 km/h). Once the vehicle speed drops below 18 mph (30 km/h), an audible alarm will sound, the head’s up display will flash and the automatic ...