The High Beam Control System (HBC) operates to switch the headlights automatically between high and low beams after the ignition is switched ON and the headlight switch is in the AUTO and high beam position.
The High Beam Control System (HBC) determines that it is dark based on the brightness of the surrounding area. At the same time, the High Beam Control System (HBC) indicator light (green) in the instrument cluster illuminates.

NOTE
When the vehicle speed is less than about 20 km/h (12 mph), the High Beam Control System (HBC) switches the headlights to low beams.
High Beam Control System (HBC) (Some models)
Manual SwitchingMazda 6 Owners Manual: Side protector removal
1. Pry the side protector end 20-30 mm {0.8-1.1 in} using a flathead
screwdriver or a razor.
Warning
Using a razor with bare hands can cause injury. Always wear gloves
when using a razor.
Note
The side protector is installed with double-sided adhesive tape.
If the side protector ...
Mazda 6 Owners Manual: Moonroof (Some models)
The moonroof can be opened or closed electrically only when the ignition is switched
ON.
WARNING
Do not let passengers stand up or extend part of the body through the open
moonroof while the vehicle is moving: Extending the head, arms, or other parts
of the body through the moonroof is dan ...