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Kia Sedona Key Fob Battery Replacement Guide
How to change a dead battery in the key fob remote control for a 3rd generation 2015 to 2018 Kia Sedona minivan.

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2015 Sedona Kia Fob
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Back Side of Key Fob
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Release Switchblade Key

This automotive maintenance tutorial was specifically written to assist owners of the third generation (2015, 2016, 2017, 2018 and probably also the refreshed 2019 or 2020 model years) Kia Sedona minivan in changing a dead or weak battery in the key fob remote control for the keyless entry system.

Owners of other Kia or Hyundai models such as the Grand Carnival, Sorento, Sportage, Niro, Soul, K900, Stinger, Cadenza, Optima, Rio, Forte, Genesis, Sonata, Ioniq, Santa Fe, Tucson, Elantra and Accent may also find these DIY instructions to be helpful.

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

The tools that may be needed to access and replace the key fob battery include a plastic pry bar tool and a small flathead screwdriver.

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Metal Ignition Key Released
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Place Thumb In Notch
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Battery Cover Removed
The first step is to separate your other keys and key ring from the fob assembly.

Then press the silver chrome button on the front of the fob to release the metal ignition key.

Place your thumb into the void where the ignition key used to reside.

Firmly pull off the battery cover on the back side of the fob.

If you have trouble pulling off the rear cover, try using a plastic pry bar tool to pop it off.

Set the rear cover aside in a safe place.

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Gently Pry Out Old Battery
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Old Battery Removed
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Panasonic CR 2032 3V
Use a small flathead screwdriver to gently pry out the old battery from the socket.

You could also just turn over the fob and firmly tap it on the table to dislodge the old battery.

The OEM battery in the key fob for this 2015 Kia Sedona was a Panasonic CR2032 3 volt lithium cell.



 

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Install New Battery
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"+" Positive Side Up
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Line Up Rear Cover
Line up the new battery with the "+" positive side facing up towards you and the "-" negative side facing down into the holder.

Push a new number CR2032 coin cell battery into the socket.

Make sure the new battery is securely installed with the small black plastic tabs situated above the top of the new battery.

Line up the rear cover with the back side of the fob.

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Snap Cover In Place
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Flush With Fob Housing
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Test New Key Fob Battery
Gently pop the rear cover back into place over the new battery.

Make sure the rear cover is flush against the rest of the fob assembly at every edge.

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

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

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

For more, please check out all of my Kia Sedona DIY Repair & Maintenance Guides.
 

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