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Illuminated engine start/stop button

Whenever the front door is opened, the engine start/stop button will illuminate for your convenience. The light will go off after about 30 seconds when the door is closed.
When all doors are closed and you lock the vehicle by using the transmitter or the smart key, the light will go off immediately.
Kia Stinger (CK) 2018-2023 Owner's Manual: Active hood actuator assembly
Repair procedures Replacement 1. Disconnect the negative battery terminal. After disconnecting the cables, wait at least 30 seconds. 2. Remove the cowl top cover. (Refer to Body - "Cowl Top Cover") 3.Kia Stinger (CK) 2018-2023 Owner's Manual: The Eco-coasting system
When certain conditions are met, the engine is automatically decoupled from the transmission while the shift lever is remained in D (Drive). In this ECO Coasting mode, the engine stays at idling speed to reduce fuel consumption and increase coasting distance. The engine is automatically coupled back again when ECO Coasting deactivation conditions are met.