Adaptive Cruise Control (ACC)
ACC works in conjunction with conventional cruise control to maintain a minimum following distance when a lead vehicle is being tracked. The minimum following distance is maintained by automatically decelerating the vehicle using throttle, engine, and service brakes without driver intervention. When the lead vehicle is no longer being tracked, the set cruise control speed resumes automatically.
Standby
When no lead vehicle is detected, OnGuard ACC operates similarly to conventional cruise control. The cruise control set speed is shown on the OnGuard display unit. See Fig..
Fig. 1, ACC Standby (blue)
Lead Vehicle Detected
When a lead vehicle is detected in the lane ahead, the display shows that ACC is on and the radar is tracking it. See Fig..
Fig. 2, ACC Lead Vehicle Detected (green)
If the driver uses the accelerator pedal to override the cruise control and approach a vehicle too closely, the ACC will emit an audible alert and the display background will turn yellow. The alert will end when vehicle speed drops below the lead vehicle's speed and the following distance is increased.
Note: The following distance alert does not operate at speeds below 15 mph (25 km/h) or above 77 mph (124 km/h).
Collision Warning
If the lead vehicle is traveling slower than the driver's vehicle, the CMS warns of an impending collision by emitting an urgent audible alert and displaying the collision warning symbol with a red background. See Fig..
Fig. 3, ACC Collision Warning (red)
The braking control will activate and slow the vehicle. The driver must also initiate braking.