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How to Replace the KIA Optima Remote Battery

Model: Kia Optima / K5 JF, MK 4 - Years 2015-2020
Part: Key

In this tutorial, you will see how to replace the KIA Optima remote battery, a very simple and quick operation. You will only need a small flat-head screwdriver and a replacement CR2032 battery. First, extend the emergency metal key by pressing the appropriate button, then leverage in the indicated slot and remove the rear cover. Next, extract the old battery, insert the replacement ensuring the polarity is correct, and reassemble everything by following the reverse procedure.

Posted on 21 February 2026 by ScegliAuto

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