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Nissan Sentra Key Fob Battery Replacement Guide
How to change the battery in the key fob remote control for a 7th generation 2013, 2014 or 2015 Nissan Sentra sedan.

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2014 Sentra Key Fob
Back Side of Key Fob
Remove Small Screw
This automotive maintenance tutorial was specifically written to assist owners of the seventh generation (2013, 2014, 2015 and possibly also the revised 2016 and 2017 model years) Nissan Sentra sedan in changing the battery in the combination metal ignition key and key fob remote control for the keyless entry system.

Owners of other Nissan or Infiniti vehicles such as the Versa, Maxima, Juke, Rogue, Altima, Xterra, Pathfinder, Murano, Cube, Armada, Leaf, Quest, Frontier, Teana, 370Z, GT-R, Titan, G25, G37, M35, QX56, QX60 and M37 may also find these DIY instructions to be helpful.

A replacement coin cell (A.K.A. "button" or "watch") battery is part number CR1620 which is available from various manufacturers such as Sony, Panasonic, Energizer, Maxell and Duracell.

The tools required to access and replace the battery include a small Phillips head screwdriver and a small flathead screwdriver.

Phillips Screw Removed
Small Notch On Edge
Insert Flathead Screwdriver
The first step is to separate the key ring and your other keys from the combination ignition key and key fob assembly.

Turn over the key fob and remove the single screw by turning it counterclockwise with a small Phillips head screwdriver.

Set the screw aside in a safe place.

Locate the small notch on the edge of the key fob.

Insert the blade of the small flathead screwdriver in to the notch.

Pry Open Key Fob
Remove Old Battery
Old Battery Removed
Gently pry off the back cover from the key fob.

Turn over the rear cover to access the battery holder.

Either gently pull out the old battery with your finger nail or carefully pry it out with the small flathead screwdriver.

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

The OEM battery in the fob for this 2014 Sentra was a Sony CR1620 3 volt coin cell.


Sony CR 1620 - 3 Volt
Positive "+" Side Down
Install New Battery
Push a new CR1620 3 volt coin cell battery in to the socket with the "+" positive side facing down and the "-" negative side facing up towards you.
New Battery In Socket
Line Up Back Cover
Snap Together Key Fob
Line up the two halves of the key fob and gently snap them together.
Tighten Phillips Screw
Phillips Screw Secured
Test New Key Fob Battery
Re-insert the screw in to the rear cover and tighten it in the clockwise direction with the Phillips head screwdriver.

To test the new key fob battery, stand near your Sentra 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, check out my other 2013-2015 Nissan Sentra DIY Repair & Maintenance Guides.

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