I have the same problem
I have the same problem on my 2016 CX 9 just bought it in March but for some reason the passenger side blind spot only works sometimes even when passing a car or a car approaching your blind spot it wouldn't detect it then after a few cars then it would go on idky...
Anyone has this problem when you press the break pedal to reverse and then break to shift into drive and it clunks and jerks and feels like someone just hit your car from the back?...I haven't taken it in to service yet but what i do is put the car in park turn it off for a min and then turn it...