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: Steering Gear Rack, Linkage and Boots
Repair procedures Inspection 1. Check the steering wheel free road. (1) Turn the steering wheel so that the front wheels are facing straight ahead. (2) Measure the distance where the steering wheel can be turned without moving the front wheels.Kia Stinger (CK) 2018-2023 Owner's Manual: Steering Angle Sensor
Description and operation Description Steering Wheel Angle Sensor detects rotating direction of the vehicle.The rotating direction detected by the sensor is sent to the HECU as CAN signal via CAN communication. HECU detects speed of the steering wheel handling and the angle with this CAN signal. HECU also uses this signal as the input signal to control anti-roll.