Also from my manual, (and the system works well to control speed when using adaptive cruise control, as well):
riving Aids - Pre-Collision Assist
PRE-COLLISION ASSIST
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Using the Pre-Collision Assist System
The system is active at speeds above 3 mph (5 km/h) and pedestrian detection is active at speeds up to 50 mph (80 km/h).
If your vehicle is rapidly approaching another stationary vehicle, a vehicle traveling in the same direction as yours, or a pedestrian within your driving path, the system provides three levels of functionality:
- Alert.
- Brake support.
- Active braking.
Alert: When active, a flashing visual warning and an audible warning tone sounds.
Brake support: The system helps reduce the impact speed by preparing the brakes for rapid braking. The system does not automatically apply the brakes. If you press the brake pedal, the system can apply additional braking up to maximum braking force, even if you lightly press the brake pedal.
Active braking: It activates if the system determines that a collision is about to occur. The system may help the driver reduce impact damage or completely avoid the crash.
Note: If you perceive pre-collision assist alerts as being too frequent or disturbing, you can reduce the alert sensitivity, though the manufacturer recommends using the highest sensitivity setting. Setting lower sensitivity would lead to fewer and later system warnings.
Note: The system turns off when you manually disable AdvanceTrac™, or when you select track mode.