Replacing the key battery

Figure 1. Remote key
2026 Kia Tasman remote key battery replacement image. A red arrow points upward from the battery slot of the disassembled remote key to a coin battery. Plus (+) and minus (-) signs indicate the correct polarity. This describes the battery replacement process and polarity alignment.
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Figure 2. Smart key
2026 Kia Tasman smart key battery replacement image. A thin tool is inserted into the slot at the top of the white smart key to pry open the battery cover. This illustrates the process of opening the cover to replace the battery.
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2026 Kia Tasman Smart key battery replacement image. The back cover is removed, showing the internal components. A CR2450 battery is displayed with positive (+) and negative (-) polarity indicators. A red arrow inside the battery slot points to the left, indicating the installation direction. Explains the process of replacing the smart key battery.
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Simple operation

  • Pry open the key battery cover gently using a thin tool.

Operation

  1. Pry open the key battery cover gently using a thin tool.

  2. Replace the old battery with a new battery.

TIP

When replacing the battery with a new one, make sure align the battery poles properly.

  • Remote key: CR2032

  • Smart key: CR2450

The assembly order is the reverse of the disassembly order.

CAUTION

  • The smart key is designed to give you years of trouble-free use, however it can malfunction if exposed to moisture or static electricity. If you are unsure how to use or replace the battery, Kia recommends to contact an authorized Kia dealer/service partner.

  • Using the wrong battery can cause the smart key to malfunction. Be sure to use the correct battery.

  • To avoid damaging the smart key, don't drop it, get it wet, or expose it to heat or sunlight.

  • 2026 Kia Tasman battery disposal warning icon. It displays a black outline of a wheelie bin crossed out with a large X. Indicates that the battery or electronic key must not be disposed of in household waste. An inappropriately disposed battery can be harmful to the environment and human health. Dispose the battery according to your local law(s) or regulation.

NOTE

  • If, for some reason, you happen to lose your smart key, you will not be able to start the vehicle. Tow the vehicle, if necessary, contact a professional workshop. Kia recommends to contact an authorized Kia dealer/service partner.

  • A maximum of 2 smart keys can be registered to a single vehicle. If you lose a smart key, Kia recommends to contact an authorized Kia dealer/service partner.

  • When the smart key does not work properly, open and close the door with the mechanical key. If you have a problem with the smart key, Kia recommends to contact an authorized Kia dealer/service partner.

  • If the smart key is not moved for some time, the detection function (if equipped) for smart key operation will pause. Lift the smart key to activate the detection again.