Contents:

The battery is in the trunk under the compartment cover.
When replacing the battery, disconnect the negative (-) cable (1) and remove the positive (+) battery fuse box (2).
Remove the battery mounting bracket (3).
WARNING - Touching metal surfaces in the trunk under the compartment cover

Do not touch metal surfaces in the trunk under the compartment cover while the engine is operating or hot. Doing so could result in serious personal injury. Turn the engine off and wait until it cools down or wear gloves to replace the battery from the luggage room.
Your vehicle has a maintenance-free, calcium-based battery.
When recharging the battery, observe the following precautions:
Reset items
Items should be reset after the battery has been discharged or the battery has been disconnected.
Kia Stinger (CK) 2018-2023 Owner's Manual: Auto Defogging Sensor (DATC only)
Description and operation Description Installed on the windshield glass, the auto defogging sensor judges and sends signal to blow out wind for defogging if moisture occurs. On receiving the signal from the sensor, the air conditioner control module restrains moisture and eliminates fog by controlling the intake actuator, A/C, auto defogging actuator, blower motor rpm, and mode actuator.Kia Stinger (CK) 2018-2023 Owner's Manual: Adaptive Front-Lighting System (AFS) Unit
Components and components location Components Schematic diagrams Schematic Diagrams Description and operation Description AFS Unit (ECU) AFS located in Cockpit Module is provided information of vehicle (steering wheel signal, vehicle speed, inclination of vehicle). Based on provided information, it calculates algorithm and adjust Low beam of H/Lamp.