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Chrysler Pacifica Key Fob Battery Replacement Guide
How to change the battery in the smart or "intelligent" key fob for a 2017, 2018 or 2019 Chrysler Pacifica minivan.

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2017 Pacifica Smart Fob
Back Side of Key Fob
Chrome Button - Corner

This automotive maintenance tutorial was specifically written to assist owners of the first generation (2017, 2018, 2019 and possibly also the 2020 and 2021 model years) Chrysler Pacifica minivan in changing a weak or dead battery in the smart or "intelligent" key fob remote control for the keyless entry system and push button start system.

Owners of other FCA (Fiat Chrysler America) vehicles from Chrysler, Dodge, Jeep, RAM or Fiat such as the Town & Country, 300, 200, Charger, Challenger, Durango, Journey, Grand Caravan, Wrangler, Grand Cherokee, Compass, Renegade, Patriot, RAM 1500, RAM ProMaster City, Fiat 500 and Fiat 124 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 which is available from various manufacturers such as Panasonic, Sony, Energizer, Duracell or Maxell.

The only tool needed to access and replace the key fob battery is a flathead screwdriver or a plastic pry bar tool.

Push In Chrome Button
Slide Out Emergency Key
Opening - Ignition Key Slot
The first step is to locate the chrome silver button on the bottom left corner of the fob.

The button is situated near the red "Panic" button and the loop for your key ring.

Firmly push in the chrome silver button and slide out the emergency / backup metal ignition key.

Set the key aside in a safe place.

Insert Flathead Screwdriver
Gently Pry Apart Halves
Rear Cover Removed
Insert the flat head screwdriver or a plastic pry bar tool into the opening where the ignition key used to reside.

Carefully twist the screwdriver to pry apart the two halves of the fob.

Gently pull apart the two halves of the fob.

Set the back cover aside.

Gently Pry Out Old Battery
Old Battery Removed
Panasonic CR2032 3V
Use the screwdriver to very carefully pry out the old battery from its socket.

Try to avoid scratching the green circuit board or bending the metal electrical contacts.

The original "OEM" battery was a Panasonic CR2032 3 volt coin cell.


Metal Electrical Contacts
Push In New Battery
New Battery Installed
Push a new CR2032 battery into the socket with the "+" positive side facing up towards you and the "-" negative side facing down towards the green circuit board.

Make sure that the new battery is fully seated.

Line Up Back Cover
Snap Together Two Halves
Empty Slot - Key
Line up the rear cover of the fob with the front case.

Gently snap together the two halves of the fob.

Make sure that both pieces of the fob are flush together at every edge.

Replace Ignition Key
Key Fob Re-Assembled
Test New Key Fob Battery
Slide the backup metal ignition key into the slot until it clicks securely in place.

To test the new 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 also hear the door locks opening or closing.

Be sure to write down the battery change in your vehicle's service records.

For more, check out all of my Chrysler Pacifica Minivan 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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