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When your vehicle moves backwards from a parking position, the sensor detects approaching vehicles to the left or right side direction and gives information to the driver.

The message will appear to notify the driver if there are foreign substances on the surface or inside the rear bumper or it is hot near the rear bumper. The light on the switch and the system will be turned off automatically.
Remove the foreign substance on the rear bumper.
After the foreign substance is removed, if you drive for approximately 10 minutes, the system will work normally.
If the system does not work normally even though the foreign substance, trailer or carrier, or other equipment is removed, have the system checked by an authorized Kia dealer.
It is possible to get the message with no foreign substance on the rear bumper, for example, when driving in a rural or open area, such as desert, where there is insufficient data for operation.
This message may also activate during heavy rain or due to road spray. In this case, the vehicle does not need service.
When the cargo area or other equipment is being used, turn all functions of the system [OFF].

If the system does not work properly, a warning message will appear and the light on the switch will turn off.The system will turn off automatically.
In this case, have the system checked by an authorized Kia dealer.
Non-operating condition
Outside rearview mirror may not alert the driver when:
- The outside rearview mirror housing is damaged or covered with debris.
- The window is covered with debris.
- The windows are severely tinted.
Kia Stinger (CK) 2018-2023 Owner's Manual: ECS Control Unit
Repair procedures Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the luggage side trim. (Refer to Body - "Luggage side trim") 3. Disconnect the ECS control unit connector (A). 4. Loosen the ECS control unit bracket nut and then remove the ECS control unit (A).Kia Stinger (CK) 2018-2023 Owner's Manual: For best battery service
Keep the battery securely mounted. Keep the battery top clean and dry. Keep the terminals and connections clean, tight, and coated with petroleum jelly or terminal grease. Rinse any spilled electrolyte from the battery immediately with a solution of water and baking soda. If the vehicle is not going to be used for an extended time, disconnect the battery cables.