One problem related to warnings has been reported for the 2019 Mazda CX9. The most recently reported issues are listed below.
Mazda Smart braking system, front radar warning lights come on after car is started. Windshield and front emblem is clean. No intense heat. Comes on every time when started. Will not allow cruise control to be set. Sometimes a funny brake pedal feel when applied but does not brake by itself. . . . Yet. There have been tsbs on earlier models with a replacement front camera(fsc) fix. My car does have the �new� camera but is obviously not functioning properly.