Battery replacement
A battery should last for several years, but if the smart key is not working properly, try replacing the battery with a new one. If you are unsure how to use or replace the battery, contact an authorized Kia dealer.

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Pry open the smart key center cover using screw (-) driver.
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Replace the battery with a new battery (CR2032). When replacing the battery, make sure the battery position is correct.
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Install the battery in the reverse order of removal.