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Hyundai Tucson Key Fob Battery Replacement Guide
How to change the battery in the key fob remote control of a second generation 2010 to 2015 Hyundai Tucson SUV.

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2014 Tucson Key Fob
Back Side of Key Fob
Notch On Top of Fob
This automotive maintenance tutorial was specifically written to assist owners of the 2nd generation (2010, 2011, 2012, 2013, 2014 & 2015) Hyundai Tucson SUV in changing the battery in the key fob remote control for the keyless entry system.

Owners of other Hyundai and Kia vehicles such as the Accent, Elantra, Sonata, Azera, Veloster, Tiburon, Genesis, Lavita, Veracruz, Santa Fe, ix35, Equus, Cadenza, Forte, Optima, Rio, Soul, Sedona, Sorento, Spectra and Sportage may also find these DIY instructions to be helpful.

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

The only tool needed to replace the battery is a small flathead screwdriver.

You may also be able to use a plastic pry bar tool, a coin, a butter knife, a house key or a nail file to pry apart the two halves of the fob.

Insert Screwdriver In Notch
Or Use Quarter Coin
Pry Apart Two Halves Fob
The first step is to locate the small notch on the top of the key fob near the "Lock" button.

Insert the blade of your flathead screwdriver or a coin in to the notch and gently pry apart the two halves of the key fob.

Push Out Old Battery
Battery Removed From Slot
Panasonic # CR 2032
Lift the green circuit board remote control unit out of the key fob case.

Gently push out the old coin cell battery from the socket.


Slide In New CR2032
Re-Insert Remote Control Unit
Line Up Front Cover Fob
Slide the new CR2032 3 volt battery in to the holder with the "+" positive side facing up towards you.

Lower the remote control unit in to the front cover of the key fob with the battery facing towards you.

Snap Together Two Halves
Key Fob Re-Assembled
Test New Key Fob Battery
Line up the rear cover of the key fob and gently snap together the two halves.

Make sure that the two halves of the key fob are flush together all the way around.

Test the new battery by standing next to your Tucson and pressing 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.

For more, check out my other Hyundai Tucson DIY Repair & Maintenance Guides.

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