The Rear Cross Traffic Alert feature monitors approaching cross traffic from the left and right side of the vehicle when your vehicle is in reverse.
Kia Cee'd JD Service Manual: Rear Parking Assist System Switch Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the console upper tray complete.
(Refer to Body - "Floor Console Assembly")
3.
Disconnect the connector (A).
...
Kia Cee'd JD Service Manual: Cluster Ionizer Repair procedures
Inspection
1.
Press the VENT switch more then 4 times within 2 seconds while pressing
the OFF switch.
Display
Fail description
00
Normal
...