See also:

Low speed automatic cancellation
ACC is not functional at vehicle speeds below 16 mph (26 km/h). Once the vehicle speed drops below 16 mph (26 km/h), an audible alarm will sound and the automatic braking will be released. ...

Using the power lumbar support
The power lumbar control is located on the outboard side of the seat. Press one side of the control to adjust firmness. Press the other side of the control to adjust softness. ...

Overriding adaptive cruise control
WARNING: Whenever the driver is overriding the ACC by pressing the accelerator pedal, the ACC will not automatically apply the brakes to maintain separation from any vehicle ahead. The set speed ...