Do it yourself
Frequently asked questions about cars and motorcycles

How to Replace the Key Battery on the Mazda CX-9

Model: Mazda Cx 9 TC - Years 2016-2024
Part: Key

If you need to replace the key battery for this vehicle, useful information on what to do can be found in the description below. First, extract the emergency key by unlocking it using the small button located on the back of the remote. Then, take a sharp object and pry off the back cover of the remote. After that, you will have access to the compartment that contains the battery, which you can remove and replace with a new CR 2025 model. Position the positive terminal facing up, then reattach the cover and finally insert the emergency key back into its slot.

Updated on 29 May 2026 by ScegliAuto

Video tutorial

Related tutorials

Mazda Cx 9 (2016-2024 / TC) In this new guide aimed at all of you who own a second generation Mazda CX 9, we will explain how you can quickly and safely replace the key battery.…
Mazda Cx 9 (2007-2015 / TB) Today we will see the instructions that will allow us to disassemble and replace the battery of the Mazda CX-9 engine, in simple and quick steps. Fir…
Mazda Cx 9 (2016-2024 / TC) In this new mini guide dedicated to your Mazda CX-9, discover how to properly change the battery in the smart key. To complete the entire operation c…

Other guides you may be interested in

How to Check the Oil Level on a Jeep Renegade?

To check the oil level on a Jeep Renegade, you need to open the bonnet to access the components inside the engine bay: on the lower left side of the engine block, you will find the dipstick for checking the level. This should be pulled out and thoroughly cleaned with a cloth: once cleaned, reinsert it back into its tube and pull it out immediately after. This way, you can check that the oil mark is between the minimum and maximum levels; finally, you can place the dipstick back in its tube.

Watch the video!


by ScegliAuto

More videos