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Kia Sorento Key Fob Battery Replacement Guide
How to change a weak or dead battery in the key fob remote control for a 3rd generation 2016 to 2020 Kia Sorento.

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2019 Sorento Key Fob
Back Side of Key Fob
Release Ignition Key
This automotive maintenance tutorial was specifically written to assist owners of the third generation (2016, 2017, 2018, 2019 and 2020) Kia Sorento SUV in changing a weak or dead battery in the key fob remote control for the keyless entry system.

Owners of other Kia, Hyundai and Genesis vehicles such as the Soul, Seltos, Sportage, Niro, Telluride, Forte, Rio, Optima, Stinger, Cadenza, K900, Sedona, Kona, Venue, Santa Fe, Elantra, Sonata, Accent, Veloster, Ioniq, Nexo, G70, G80 and G90 may also find these instructions to be helpful.

The compatible replacement coin cell battery (also known as a "button" or "watch" battery) is part number CR2032 which is available from various manufacturers such as Panasonic, Sony, Energizer, Duracell and Maxell.

The tools you may need to access and replace the battery include a plastic pry bar tool and a small flat head screwdriver.

I recommend first detaching the key ring with your house and other keys from the fob.

Then press the chrome silver button on the top left of the fob to swing out the switchblade style metal ignition key.


Empty Slot On Side
Insert Pry Bar Tool
Pop Off Battery Cover
Insert a plastic pry bar tool, a large flat head screwdriver or your thumb into the slot on the side of the fob where the metal ignition key used to reside.

Carefully pry off the battery cover on the back side of the fob assembly.

Try to avoid using excessive force. The rear cover should pop off relatively easily.

Battery Cover Removed
Pry Out Old Battery
Lift Out Old Battery
Set the access cover aside in a safe place.

Use a small flat head screwdriver, such as from a jeweler's screwdriver set, to gently pry the old battery out of the socket.

Try to avoid scratching the green circuit board or bending the metal electrical contacts.

Old Battery Removed
Panasonic CR2032 3V
Empty Battery Socket
The OEM (original equipment manufacturer) coin cell battery in this 2019 Sorento was a Panasonic CR2032 3 volt.
Lower In New Battery
New Battery Installed
Line Up Rear Cover
Orientate the new battery with the "+" positive side facing up towards you and the "-" negative side facing down into the holder.

Gently pop the new CR2032 battery into the socket.

Make sure the new battery is fully seated in the fob.

Line up the back cover over the battery compartment.

Snap On Back Cover
Key Fob Re-Assembled
Test New Fob Battery
Gently push the rear cover into place.

You should feel or hear the battery cover "click" securely into place.

Make sure that the battery cover is flush with the rest of the fob at every edge.

To test the new battery, stand near your SUV and press the "Unlock" and "Lock" buttons.

If the new battery is working properly, you should see the parking lights flash and also hear the door locks opening and closing.

Be sure to write down the battery change in your vehicle's service records.

You shouldn't have to re-program the key fob. Just replacing the battery will not clear the original programming.

Check out all of my 2016-2020 Kia Sorento DIY Repair & Maintenance Guides.

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