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When the EPB is applied from Auto Hold, a warning will sound and a message will appear.

When the conversion from Auto Hold to EPB is not working properly a warning will sound and a message will appear.
✽ NOTICE
When this message is displayed, the Auto Hold and EPB may not operate. For your safety, depress the brake pedal.

If you do not apply the brake pedal when you release the Auto Hold by pressing the [AUTO HOLD] switch, a warning will sound and a message will appear.

When you press the [AUTO HOLD] switch, if the driver's door and engine hood are not closed or the driver's seat belt is unfastened, a warning will sound and a message will appear on the LCD display. At this moment, press the [AUTO HOLD] button after closing the driver's door and engine hood and fastening the seat belt.
A vehicle has the tendency to roll back on a steep hill when it starts to go after stopping. The Hill-start Assist Control (HAC) prevents the vehicle from rolling back by applying the brakes automatically for about 2 seconds. The brakes are released when the accelerator pedal is depressed or after about 2 seconds.
The HAC is activated only for about 2 seconds, so when the vehicle is starting off always depress the accelerator pedal.
WARNING - Maintaining Brake Pressure on Incline
HAC does not replace the need to apply brakes while stopped on an incline. While stopped, make sure you maintain brake pressure sufficient to prevent your vehicle from rolling backward and causing an accident. Don’t release the brake pedal until you are ready to accelerate forward.
Kia Stinger (CK) 2018-2023 Owner's Manual: Limitation of the system
The FCA system is designed to monitor the vehicle ahead or a pedestrian on the roadway through radar signals and camera recognition to warn the driver that a collision is imminent, and if necessary, apply emergency braking. In certain situations, the radar sensor or the camera may not be able to detect the vehicle or pedestrian ahead. In these cases, the FCA system may not operate.Repair procedures Adjustment 1. After loosening the hinge (A) mounting bolt, adjust the hood (B) by moving it up and down, or right and left. 2. Adjust the hood height by turning the hood overslam bumpers (C). 3. After loosening the hood latch (D) mounting bolts, adjust the latch by moving it up and down, or right and left.