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: Brake switch
Components and components location Components 1. Brake switch 2. Brake pedal Schematic diagrams Terminal function Pin No Description 1 IGN1 2 IBU 3 - 4 B+ 5 Stop lmap 6 Ground Troubleshooting Troubleshooting 1.Kia Stinger (CK) 2018-2023 Owner's Manual: Inside rearview mirror
Adjust the rearview mirror so that the center view through the rear window is seen. Make this adjustment before you start driving. Do not place objects in the rear seat or cargo area which would interfere with your vision through the rear window. WARNING - Mirror adjustment Do not adjust the rearview mirror while the vehicle is moving. This could result in loss of control.