If you are passing a vehicle the light turn off once the other vehicle clears your back bumper if it is falling behind you.
Mazda blind spot monitoring problem.
I suggest you do as you said and go to mazda be really nice.
Such close calls are not uncommon and can be dangerous.
Maybe they cut you a break.
You can inspect the sensors and module for connections and wiring fault but the only way to find out the fault code is to bring it to a mazda dealer or a shop that has a good scan tool that will read body module fault codes and not just a obd2 code reader.
A quick tutorial on mazda s blind spot monitoring and how it works.
The car was never in an accident and i even made sure the sensors on the back were clean.
I was driving on the highway when suddenly the bsm off light started flashing and pressing the bsm button on the left does nothing.
The blind spot monitoring bsm switch is pressed and the blind spot monitoring bsm off indicator light in the instrument cluster is turned off.
Some problem with the system including the blind spot monitoring bsm warning indicator lights is detected.
If the blind spot monitoring bsm off indicator light remains illuminated have the vehicle inspected at an authorized mazda dealer as soon as possible.
Always make it your responsibility as a driver to check the rear.
If a vehicle is gaining on you and will be in your blind spot within 3 5 seconds the light will come on.
The vehicle speed is about 10 km h 6 3 mph or faster.
The bsm monitor was not damaged but it got loose from its mounting bracket so the radar was not reading correctly.
If a vehicle is in your blind spot the light will come on.
Mazda s blind spot monitoring bsm uses radars mounted in the rear bumper to detect vehicles approaching from behind and in the adjacent lane.
The ignition is switched on.
The blind spot monitoring bsm system will operate when all of the following conditions are met.
Discover how the system is enabled and how it alerts.
It alerts drivers to the presence of vehicles in the blind spot on either side by displaying an icon in the appropriate door mirror.
Recently the blind spot monitoring system on my 2014 mazda 6 stopped working.
I asked and since there was no damage to the sensor itself they replaced it under warranty.