2018 Kia Optima Key Fob Battery Replacement Instructions

2018 Kia Optima Key Fob Battery Replacement Instructions

If your Kia key isn't unlock doors properly, the battery likely must to be replaced. Below, we described how to open your car remote key fob and replace your Kia key battery step by step.

What type battery does 2018 Kia Optima remote key fob take

Before beginning open keyless entry remote check all that you need: flat head screwdriver and 1 CR2032 battery.
  • flat head screwdriver
  • 1xCR2032 battery

Simple steps to replace the battery in your car's key fob

A small button cell battery installed inside the your keyless entry remote. Remove any internal key first, and then try to pry apart the key fob.

Accurately try to disassemble your key with flat head screwdriver. Change CR2032 battery with flat head screwdriver.

Change old battery with new one CR2032. Battery must be installed with the same polarity as was a previous. Your keyless entry remote will not work if you mistakenly put battery wrong way.

Before assembling keyless entry fob's case, make sure that all functions works by testing buttons on remote key fob.

The last thing to do is put your cover back on fob. Gently try to put the two halves in place by hands from top to bottom. Inspect your keyless entry remote shell for gaps. If it is not tightly closed try to repeat last step.

How to replace the battery video instruction

How To Replace The Battery On The Kia Optima Remote

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Kia Optima require 1xCR2032 batteries. Price for CR2032 batteries are under $5 depending on the brand, size packaging and type you buy. You can take old battery to the store, with you to find a proper replacement.

Remote key fob in most of cases reprogramming not needed after battery replace. If your key fob not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Yes, you can change battery in your 2018 Kia Optima key yourself. Most difficult part is to disassembly keyless entry fob's case. It's pretty simple with our step by step guide.

Auto repair shop's cost for change the battery in key fob is from $30 to as high as $500 depending on the brand.

Key fob batteries in Kia Optima should be replaced every 4 years, but this will vary based on their amount of use and battery quality. If your keyless entry remote decreased signal strength, you should replace batteries before it stop working and make problems for you.

If your auto fob's battery more than 4 years old, need multiple clicks to unlock or lock doors, signal strength reduced or has low key battery indicator on dashboard, it's probably battery replace in remote key fob needed. Installed battery is weak or dead with a high probability, but if it's not fix, key fob replace or repair required.
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Fob Compatibility:

  2. Models: 2016-2020 Kia Optima