If there is the possibility of a collision with a vehicle ahead, the beep sounds continuously and a warning is indicated in the multi-information display or the active driving display.

NOTE
The operation distance and volume of the collision warning can be changed.
Smart City Brake Support (SCBS) Indicator Light (Red) (Type B Instrument Cluster)
Automatic Brake Operation Display (Type A Instrument Cluster)Mazda 6 Owners Manual: Distance Recognition Support System (DRSS) (Some models)
The Distance Recognition Support System (DRSS) measures the distance between
your vehicle and a vehicle ahead using a radar sensor (front) while the vehicle
speed is about 30 km/h (19 mph) or faster, and if your vehicle approaches a vehicle
ahead more closely than what is appropriate for maint ...
Mazda 6 Owners Manual: Power Windows
The ignition must be switched ON for the power windows to operate.
WARNING
Make sure the opening is clear before closing a window: Closing a
power window is dangerous. A person's hands, head, or even neck could be caught
by the window and result in serious injury or even death. This warning ap ...