Mazda 6 2017 Owner's Manual page 220

When Driving
i-ACTIVSENSE
In the following case, the flashing of the Blind Spot Monitoring (BSM) warning indicator

light, and the activation of the warning sound and the warning screen indicator display
may not occur or they may be delayed.
A vehicle makes a lane change from a driving lane two lanes over to an adjacent lane.

Driving on steep slopes.

Crossing the summit of a hill or mountain pass.

The turning radius is small (making a sharp turn, turning at intersections).

When there is a difference in the height between your driving lane and the adjacent

lane.
Directly after the Blind Spot Monitoring (BSM) system becomes operable by changing

the setting.
If the road width is extremely narrow, vehicles two lanes over may be detected.

The detection area of the radar sensors (rear) is set according to the road width of
expressways.
The Blind Spot Monitoring (BSM) warning indicator light may turn on and the vehicle

detection screen may be displayed in the display in reaction to stationary objects
(guardrails, tunnels, sidewalls, and parked vehicles) on the road or the roadside.
Objects such as guardrails and concrete walls
running alongside the vehicle.
A Blind Spot Monitoring (BSM) warning indicator light may flash or the warning beep

may be activated several times when making a turn at a city intersection.
Turn off the Blind Spot Monitoring (BSM) while pulling a trailer or while an accessory

such as a bicycle carrier is installed to the rear of the vehicle. Otherwise, the radar's
radio waves will be blocked causing the system to not operate normally.
In the following cases, it may be difficult to view the illumination/flashing of the Blind

Spot Monitoring (BSM) warning indicator lights equipped on the door mirrors.
Snow or ice is adhering to the door mirrors.

The front door glass is fogged or covered in snow, frost or dirt.

4–96
Places where the width between guardrails or
walls on each side of the vehicle narrows.
The walls at the entrance and exits of tunnels,
turnouts.