Rear Cross-traffic Collision-Avoidance Assist (RCCA) is designed to warn the driver under certain conditions. It may temporarily apply braking if it detects cross traffic approaching the vehicle when the vehicle is in reverse. 

When the rear-corner radar sensors detect approaching vehicles from the rear left or rear right side of the vehicle , RCCA will sound a warning, the warning indicators on the outside rearview mirror will illuminate and a message will appear on the Instrument Cluster  and the Infotainment System. If RCCA detects that the collision risk has increased, RCCA is designed to automatically apply the brakes to reduce your speed, potentially helping to minimize the effects of a possible collision. 

RCCA is designed to operate under the following conditions:

• When the gear shift is in Reverse
• When the vehicle is moving slower than 6 mph

RCCA can be turned on/off by going to the Vehicle Settings in the Infotainment System 

Only adjust settings when the vehicle is at a standstill, gear shift is in Park and the ignition is on or the Engine Start/Stop button is in the ON position 

To access Vehicle Settings in the Infotainment System –

1. Press the SETUP key or the onscreen SETUP button.
2. Press VEHICLE to enter Vehicle Settings.
3. Select Driver Assistance, then Parking Safety and select Rear Cross-traffic Safety