Hyundai
Tucson Key Fob Battery Replacement Guide
How to change a dead battery in the key
fob remote control for a 3rd generation 2016, 2017 & 2018 Hyundai Tucson.
2018 Tucson Key Fob |
Back of Key Fob Remote |
Chrome Silver Button |
This
automotive maintenance tutorial was specifically written to assist
owners of the third generation (2016, 2017, 2018 and the revised
2019 and 2020 model years) Hyundai Tucson SUV in changing a weak or
dead battery in the key fob remote control for the keyless entry
system. Owners of other Hyundai, Kia and Genesis vehicles such as the Santa Fe, Kona, Elantra, Sonata, Accent, Veloster, Ioniq, Nexo, G80, G90, Stinger, Rio, Forte, Optima, Cadenza, K900, Soul, Niro, Sportage, Sorento and Sedona 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. The only tool that might be needed to access and replace the old battery is a small plastic pry bar tool or a flathead screwdriver. |
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Release Switchblade Key |
Notch / Void On Side |
Insert Thumb In Opening |
The first step is
to separate your other keys from the fob. Then locate the chrome silver colored button on the front of the fob. Push in the button to release the "switchblade" style ignition key. Insert your thumb into the void where the metal ignition key used to reside. Firmly pull off the back cover of the fob. If you have trouble removing the cover, use the plastic pry bar tool to pop off the rear cover. Set the rear cover aside in a safe place. |
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Pull Off Battery Cover |
Pry Out Old Battery |
Use Flathead Screwdriver |
To remove the old
battery, you can either turn over the fob and gently tap it on the table to
dislodge the battery or use a small flathead screwdriver to pry it out. Try to avoid scratching the green circuit board or bending the metal electrical contacts when you pry out the old battery. |
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Old Battery Removed |
Panasonic CR 2032 3V |
Battery & Access Panel |
The OEM battery in the fob for this 2018 Tucson was a Panasonic CR2032 3 volt. | ||
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Install New Battery |
New Battery In Socket |
Line Up Back Cover |
Orientate the new
battery with the "+" positive side facing up towards you and the "-"
negative side facing down into the socket. Carefully push the new CR2032 battery into the holder until it fully seated. Line up the battery cover with the rear of the fob. |
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Snap Together Fob |
Cover Flush Together |
Test New Key Fob Battery |
Gently pop the
battery cover back into place. Make sure that the rear cover is flush with the fob at all the edges. To test the new battery, stand near your SUV and press the "Unlock" or "Lock" button on the key fob. If the new battery is working properly, you should see the parking lights flash and also hear the door locks opening or closing. Be sure to record the battery change in your vehicle's service records. For more,
check out all of my
2016-2018 Hyundai Tucson DIY Repair & Maintenance Guides. |
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