Can’t unlock/lock your Kia Optima due to a dead key fob battery? Learn how to fix the problem by replacing the key fob’s battery. This guide is a step-by-step procedure for replacing the key fob battery on a 2016-2020 Kia Optima.

What you will need

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  • Pick tool
  • Flat screwdriver
  • CR2032 Lithium battery 3V

Procedure

  1. Insert the flat screwdriver into the hole on the side of the key fob.Removing the cover of the key fob.
  2. Twist the flat screwdriver to pop out the cover on the battery.Removing the cover of the key fob.
  3. Slide the battery to the side and insert a pick tool to pop out the key fob’s battery.Removing the battery from the key fob.
    Removing the battery from the key fob.

  4. Slide the new battery into the key fob and push it in to lock it in its place.The new battery of the key fob.
    Installing the new battery to the key fob.

  5. Push the cover back until it snaps back to the key fob.Reinstalling the cover back to the key fob.

We hope you find the 2016-2020 Kia Optima Key Fob Battery Replacement guide helpful. Check these troubleshooting and repair guides for more help on your Kia.

Author

  • Rushit Hila • ASE Certified

    Rushit Hila, an ASE-certified engineer (G1 Automotive Maintenance and Repair), brings over two decades of hands-on experience in the automotive world to his writing. With a strong educational background, including a Master of Science in Engineering and a Bachelor of Science in Engineering, he has honed his skills and expertise through years of practical work. As a respected authority in the field, Mr. Hila is dedicated to offering insightful and valuable content that resonates with both vehicle owners and mechanics.

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