Paul's Travel Pictures

Mazda CX-9 Key Fob Battery Replacement Guide
How to replace the coin cell battery in the switchblade car key fob remote control of a 2007 to 2015 Mazda CX-9 SUV.

Main Menu            Home           Digital Cameras

Misc. Pictures            Articles            My Blog

Mazda CX-9 Car Key / Fob
Release Button Exposed
Insert Small Screwdriver
This automotive "how-to" guide was specifically written to assist owners of the 1st generation (2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 & 2015) Mazda CX-9 crossover SUV in replacing the battery in the combination switchblade car key and keyless entry remote control fob.

Owners of other Mazda vehicles such as the MAZDA2, MAZDA3, MAZDA6, MX-5 Miata, RX-8, MAZDASPEED3, MAZDA5, Tribute SUV, and CX-7 crossover may also find this guide to be helpful.

A replacement coin cell, button or "watch" battery for the Mazda CX-9 key fob is a 3 volt # CR1620 available from Panasonic, Duracell, Energizer, Maxell, Rayovac, GE and other manufacturers.

The only tool needed to replace the battery in a Mazda CX-9 switchblade style key fob is a small flathead screwdriver.

Pull Apart Two Halves
Pry Open Key Fob Remote
Remote Control Split
The first step is to open the switchblade car key and place the fob on it's side with the key pointing to the right.

Then take a close look at Picture 2 on this page to see the release button that needs to be pressed in order to separate the two halves of the fob.

Insert the small flathead screwdriver into the side of the key fob and gently press down on the button before pulling the switchblade key section away from the remote control section.

Next pry apart the two halves of the remote control section by inserting the small flathead screwdriver into the notch shown in Picture 5 above.

Pry Out Button Battery
Old Panasonic CR1620 3V
"+" Polarity Indicator
Pry out the old Panasonic CR1620 3V battery with the small flathead screwdriver.

Below the battery, you will see a "+" mark on the plastic to show that the new battery should be installed with the positive side facing down.


Insert New Battery + Down
Line Up Fob Halves
Snap Together Key Fob
Push the new CR1620 coin cell battery into the bottom section of the remote control with the "+" side facing the "+" mark molded in the plastic.

Line up the top part of the remote control over the bottom half and gently snap them together.

Mazda-CX-9-Key-Fob-Remote-Control-Battery-Replacement-Guide-013 Mazda-CX-9-Key-Fob-Remote-Control-Battery-Replacement-Guide-014
Slide In Key To Fob
Snap Together Parts
Place the switchblade key section and the remote control next to each other with their buttons facing upwards.

Slide the tabs on the key section back into the remote control section and push them together until you hear them snap in place.

Key & Fob Re-Assembled
Red LED Light Working
Test New Key Fob Battery
Test the new key fob battery by pushing the lock or unlock button while standing next to your Mazda CX-9.

The little red LED light on the key fob and also the car's parking lights should flash.

For more, check out my Mazda CX-9 Repair & Maintenance Guides page.

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!
(Note: I am not a registered charity. Donations are not tax deductible.)

Main Menu       Home       Digital Cameras

Misc. Pictures       Articles       My Blog


Copyright 2021
 All Rights Reserved

Paul's Travel Pictures is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to

Privacy Policy     About Paul & Author Contact Info