Replacing the key fob battery in your 2012 Kia Optima is usually a straightforward task. However, sometimes a simple battery change can lead to unexpected electrical problems. One owner experienced a series of issues after a standard battery replacement, highlighting that it’s not always just about the key fob.
After getting a quote for reprogramming smart keys and having the cost covered, the owner discovered several malfunctions upon driving the car at night. These problems went beyond just the key fob and TPMS reset, suggesting a deeper electrical issue.
The issues included:
- Trip Computer Reset: The trip computer failed to retain mileage information, resetting every time the car was restarted.
- Turn Signal Indicator Malfunction: Turn signals worked, but there was no visual indication on the dashboard.
- Interior Light Problems: Interior lights did not activate when doors were opened.
- Dashboard Indicator Lights Not Working: Headlight and fog lamp indicators on the dash did not illuminate, even when the lights were on.
- TPMS Warning Light: The Low Tire Pressure indicator flashed and then remained solid after driving.
These symptoms suggest that the car’s Keep Alive Memory (KAM) might not be receiving power, or that power was interrupted during the battery replacement, despite using a Memory Minder. According to the owner’s manual, some systems like windows and the trip computer may require resetting after a battery disconnection. However, the manual did not clarify if these reset procedures would restore the interior lights or the dashboard indicator lights.
This experience underscores that while changing a 2012 Kia Optima key fob battery or the main car battery might seem simple, it can sometimes lead to broader electrical malfunctions. It’s crucial to be aware of potential issues beyond the key fob itself and to consult the owner’s manual for reset procedures if you encounter similar problems after a battery replacement. If issues persist, seeking professional diagnosis is recommended to ensure all electrical systems are functioning correctly.
