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To remove the mechanical key (2), press and hold the release button (1) and remove the mechanical key.
To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard.
Kia Stinger (CK) 2018-2023 Owner's Manual: Emergency fuel filler lid release
If the fuel filler lid does not open using the fuel filler lid opener button, you can open it manually. Remove the panel in the cargo area. Pull the handle out slightly. CAUTION Do not pull the handle excessively, otherwise the luggage area trim or release handle may be damaged. WARNING - Refueling Always remove the fuel cap carefully and slowly.Repair procedures Inspection Battery Voltage and Status Check the battery voltage and status using the battery tester. Battery Terminal 1. Move back and forth to check if the battery terminals (A) are loose or corroded. If the terminals are corroded, clean them. If battery positive connection is loose, disconnect ground(GND) cable first before attempting to remove or tighten plus connection, to prevent personal injury.