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: Automatic Transmission System
Components and components location Components 1. Torque converter 2. Electric Oil Pump (EOP) 3. Parking switch (Inhibitor switch) 4. Main connector 5. ATF Warmer Repair procedures Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the stay (A) by loosening the bolts.Kia Stinger (CK) 2018-2023 Owner's Manual: Smart Cruise Control (Stop & Go) System
General safety information and caution General Safety Information and Caution Be careful when driving the vehicle using the smart cruise control system as follows. • The smart cruise control system may be restricted to detect distance to the vehicle ahead due to road and traffic conditions.