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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: Rear Axle Assembly
Components and components location Components 1. Rear brake disc 2. Hub assembly 3. Dust cover 4. Rear knuckle Repair procedures Removal 1. Remove wheel nuts, rear wheel and tire (A) from rear hub. Tightening torque : 107.9 - 127.5 N·m (11.Repair procedures Removal 1. Switch "OFF" the ignition and disconnect the negative (-) battery terminal. 2. Remove the rear-left wheel & tire and wheel house cover. 3. Remove the fuel tank air filter. (Refer to Emission Control System - Fuel Tank Air Filter") 4.