Mazda 6 2017 Owner's Manual page 236

When Driving
i-ACTIVSENSE
Rear Cross Traffic Alert (RCTA) operation
1. The Rear Cross Traffic Alert (RCTA) system operates when the shift lever (manual
transaxle) or the selector lever (automatic transaxle) is shifted to the reverse (R) position.
2. If there is the possibility of a collision with an approaching vehicle, the Blind Spot
Monitoring (BSM) warning indicator lights flashes and the warning beep is activated
simultaneously.
The Rear Cross Traffic Alert (RCTA) warning indication in the rearview monitor also
synchronizes with the Blind Spot Monitoring (BSM) warning indicator light on the door
mirrors.
WARNING
Always check the surrounding area visually before actually putting the vehicle in
reverse:
The system is only designed to assist you in checking for vehicles at the rear when putting
the vehicle in reverse. Due to certain limitations with the operation of this system, the
Blind Spot Monitoring (BSM) warning indicator lights may not flash or it might be delayed
even though a vehicle is behind your vehicle. Always make it your responsibility as a
driver to check the rear.
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