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Nissan Altima Key Fob Battery Replacement Guide
How to change the battery in the intelligent key fob for a 6th generation 2019 to 2024 Nissan Altima.

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2020 Altima Key Fob
Turn Over Key Fob
Slide Switch - Release
This automotive maintenance tutorial was specifically written to assist owners of the sixth generation 2019, 2020, 2021, 2022 and the revised or "facelifted" 2023 and 2024 Nissan Altima sedan in changing a weak or dead coin cell battery in the "Intelligent" or "Smart" key fob remote control for the keyless entry system.

Owners of other Nissan, Infiniti or related Renault vehicles such as the Rogue, X-Trail, Note, Versa, Rogue Sport / Qashqai, Maxima, Sentra, Juke, Kicks, Murano, Pathfinder, Armada, Frontier, Titan, Quest, NV200, Q50, Q60, QX50, QX60 and QX80 may also find these DIY instructions to be helpful.

The compatible replacement coin cell (also known as a "button" or "watch") battery is part number CR2032 H (also known as CR2032H) which are available from various manufacturers such as Maxell, Duracell, Panasonic, Sony and Energizer.

The only tool needed to access and replace the battery is a small flat head screwdriver such as from a precision screwdriver set.

The first step is to turn over the key fob and locate the small black plastic release switch for the backup / emergency metal ignition key.

Slide the switch towards the outer edge of the fob housing and hold it there while you remove the ignition key.


Remove Ignition Key
Backup Key Removed
Insert Screwdriver
Set the backup / emergency metal ignition key aside in a safe place.

Insert the blade of a small flat head screwdriver in between the halves of the fob housing where the ignition key used to reside.

Very gently and carefully pry apart the halves of the fob housing.

Pry Apart Two Halves
Gently Separating
Two Halves Separated
You may need to remove and reinsert the screwdriver into several locations along the seam of the fob housing.

Turn over the back cover of the fob housing to access the battery holder.

Remote Control Unit
Pry Out Old Battery
Remove Old Battery
If the rubber key pad and remote control until fall out of the front part of the fob, you can easily reinstall them later.

Use a small flat head screwdriver to gently pry the old battery out of the socket.

Old Battery Removed
Maxell CR2032H
- Negative Side Facing Up
The OEM (original equipment manufacturer) battery in the fob for this 2010 Altima was a Maxell CR2032H.

The battery should be installed with the "-" negative side facing up and the "+" positive side facing down into the socket.

Install New Battery
Line Up Two Halves
Pop Together Key Fob
Install the new CR2032 H battery into the socket with the blank "-" negative side facing up towards you.

Line up the two halves of the fob and gently snap them back together.

The front and rear covers of the fob housing should be flush together.

Slide In Ignition Key
Key Fob Reassembled
Test New Key Fob Battery
Replace the metal ignition key.

The key should "click" securely back into place.

To test the new key fob battery, stand near your car 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.

Note - Just changing the key fob battery should not clear the original programming from the factory. You shouldn't have to reprogram the key fob.

Please take a look at all of my 2019-2024 Nissan Altima DIY Repair & Maintenance Guides.

If you found this guide to be helpful, please consider making a small donation by clicking on the "Donate" button located to the right of this paragraph. Thank you!
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