- 2019 CX-5 Signature
RACC uses the camera below 20mph as does the SBS. The automation wasn't happy, gave up, and informed you. ...
I will quote the above, as it is really all that was needed and is correct.
I hope the OP is not as stupid as some are implying. RCC is a great feature that eliminates the need to constantly brake when you approach a slower vehicle from behind. It is not meant to replace common sense.