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Nissan Altima Key Fob Battery Replacement Guide
How to change the battery in the smart key fob remote control of a 5th generation 2013 to 2015 Nissan Altima sedan.

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2014 Altima Smart Key Fob
Turn Over Key Fob
Slide Release Button
This automotive maintenance tutorial was specifically written to assist owners of the fifth generation (2013, 2014, 2015 and the revised 2016 model year) Nissan Altima sedan in changing the battery in the smart or "intelligent" key fob remote control for the keyless entry system.

Owners of other Nissan or Infiniti vehicles such as the Versa, Maxima, Juke, Rogue, Murano, Xterra, Pathfinder, Sentra, Cube, Armada, Leaf, Quest, Frontier, 370Z, GT-R, Titan, G25, G37, M35 and M37 may also find these DIY instructions to be helpful.

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

The only tool needed to replace the battery is a small flathead screwdriver used to pry apart the two halves of the key fob.

Metal Ignition Key Removed
Two Small Notches
Gently Pry Apart Halves
The first two steps are to separate the fob from the key ring attached to your other keys and then turn it over.

Slide the small black tab towards the outer edge of the fob to release the emergency metal ignition key.

Remove the metal ignition key and set it aside in a safe place.

Locate the two small notches on the bottom edge of the fob where the metal key used to reside.

To prevent from scratching the plastic surfaces, you may choose to cover the tip of your screwdriver with a thin micro fiber cloth.

Insert the blade of your small flathead screwdriver in to one of the notches and gently pry apart the two halves of the fob.

Pry At Other Notch
Two Halves of Key Fob
Pry Out Old Battery
You may need to re-insert the screwdriver in to the other notch and pry again to separate the two halves of the fob.

Carefully pry the old battery out of the socket with the small flathead screwdriver.

Try to avoid damaging the metal electrical contacts with the tip of the screwdriver.

The OEM battery in the fob for this 2014 Altima was a Panasonic CR2032 3V coin cell.


Old Battery Removed
Panasonic CR2032 3V
Push In New Battery
Push a new # CR2032 3 volt coin cell in to the battery holder in the rear cover of the fob with the "+" positive side facing down and the "-" side facing up towards you.
"-" Up & "+" Side Down
Push Together Two Halves
Key Fob Flush Together
Line up the front half and the rear cover of the key fob and gently push them together.

Make sure that the two halves of the key fob are flush together at every edge.

Re-Insert Metal Ignition Key
Key Fob Re-Assembled
Test New Key Fob Battery
Push the metal ignition key back in to the slot until it clicks securely in to place.

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

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

For more, check out my other 2013-2015 Nissan Altima DIY Repair & Maintenance Guides.

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