1.Carry the smart key or place it inside the vehicle.
2.Make sure the parking brake is firmly applied
3.Place the shift lever in P (Park). Depress the brake pedal fully. You can also start the engine when the shift lever is in the N (Neutral) position.
4.Press the engine start/stop button while depressing the brake pedal.
5.Do not wait for the engine to warm up while the vehicle remains stationary. Start driving at moderate engine speeds. (Steep accelerating and decelerating should be avoided.)
WARNING - Unintended vehicle movement
Never leave the smart key in the vehicle with children or vehicle occupants who are unfamiliar with the vehicle operation. Pushing the engine start/stop button while the smart key is in the vehicle may result in unintended engine activation and/or unintended vehicle movement.

Do not press the ENGINE START/ STOP button for more than 10 seconds except when the stop lamp fuse is blown.
Kia Stinger (CK) 2018-2023 Owner's Manual: Emergency Signal System
Description and operation Description Introduction of quick brake warning system (ESS) In case of quick brake by driver, the brake lamp or turn signal is blinked to warn against the vehicle at rear. 1. Basic function (Blinking the brake lamp/emergency lamp) – Operation condition: In case of quick brake or operation of ABS above in a certain speed – Releasing condition: In case of stopping the quick brake or releasing the ABS operation 2.Components and components location Component Location 1. Hood assembly Repair procedures Replacement Be careful not to damage the hood and body. When removing and installing the hood, work in a group of two or more.