Mazda 2022 cx 5 key fob battery

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3. CX-5
: How to replace the remote control battery of the Mazda CX-5

Mazda CX-5 - Video tutorial

Model: Mazda CX-5 MK 2 - Years 2017-2022
Part: Key
Operation: How to replace the remote control battery of the Mazda CX-5

In this video we will see the replacement of the remote control battery of the Mazda CX-5; this also applies to other contemporary models of the house, given the key of the same typology. Let's start by removing the cover with a pointed object (the one that hides the metal key, useful in case of emergency start-up or if you download the keyless remote control). Then we press on the edge of the metal frame to disengage it from its seat and open the other part of the remote control; the battery compartment is hidden under this cover; remove the plastic cap and replace it. The battery to be used is a 3V CR 2032.

Posted on 16 December 2021

Mazda CX-5 Smart Key Fob Battery Replacement Guide
How to change the battery in the intelligent key fob remote control for a 2nd generation 2017 to 2022 Mazda CX-5.

Owners of other Mazda vehicles such as the CX-3, CX-30, CX-7, CX-9, Mazda3, Mazda6, MX-30, MX-5 Miata, Mazda2, CX-4, CX-8 and BT-50 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 CR2025 which is available from various manufacturers such as Panasonic, Duracell, Energizer, Sony, Maxell and Toshiba.

The only tool needed to complete this procedure is a small flat head screwdriver such as from a precision screwdriver set (also known as a jeweler's screwdriver set).

You may also be able to use a small plastic pry bar tool.

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

Pull the ignition key straight out of its slot.

Set the key aside in a safe place.

Locate the small gap between the front and rear halves of the fob assembly.

Very gently and carefully pry apart the fob housing.

You will need to remove and re-insert the screwdriver into several locations all along the edges of the fob to fully separate the two halves.

Please take your time and avoid using excessive force to prevent from cracking or breaking the plastic pieces. The two halves of the fob should pop apart relatively easily.

Locate the round black plastic battery cap.

Gently pry off the battery socket cap with the small flat head screwdriver.

Use the flat head screwdriver to carefully lift the old battery out of the socket.

Try to avoid damaging the plastic retaining tabs, scratching the green circuit board or bending the metal electrical contacts.

Orientate the new CR2025 battery with the "+" positive side facing up towards you and the "-" negative side facing down into the socket.

Lower the new battery into the holder.

Gently pop the new battery down into place. Make sure it is flush in the socket.

The cap should "click" securely into place. Make sure the cap is fully seated.

Line up the rear cover with the back side of the fob housing.

Check to see if the two halves of the fob are flush together at every edge.

Replace the metal ignition key by sliding it straight into its slot.

The ignition key should "click" securely into the slot.

If the new battery is working properly, you should see the parking lights flash, the LED headlights may turn on and you'll hear the door locks opening and closing.

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

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

Please check out all of my 2017-2022 Mazda CX-5 DIY Repair & Maintenance Guides.
 

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