{"id":7982,"date":"2026-05-20T16:37:59","date_gmt":"2026-05-20T21:37:59","guid":{"rendered":"https:\/\/paulstravelpictures.com\/blog\/?p=7982"},"modified":"2026-05-20T16:41:52","modified_gmt":"2026-05-20T21:41:52","slug":"2017-2018-2019-2020-2021-2022-2023-2024-2025-mazda-cx-5-smart-key-fob-battery-replacement-diy-guide","status":"publish","type":"post","link":"https:\/\/paulstravelpictures.com\/blog\/?p=7982","title":{"rendered":"2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 & 2025 Mazda CX-5 Smart Key Fob Battery Replacement DIY Guide"},"content":{"rendered":"

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This automotive maintenance tutorial was specifically written to assist owners of the second generation (2017, 2018, 2019, 2020, 2021 and 2022) Mazda CX-5 SUV in changing the battery in the “smart” or “intelligent” key fob remote control for the “Advanced Keyless Entry System”.<\/span><\/p>\n

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.<\/span><\/p>\n

The compatible replacement coin cell (also known as a “button” or “watch”) battery is part number\u00a0CR2025<\/a><\/b>\u00a0which is available from various manufacturers such as Panasonic, Duracell, Energizer, Sony, Maxell and Toshiba.<\/span><\/p>\n

The only tool needed to complete this procedure is a small flat head screwdriver such as from a\u00a0precision screwdriver set<\/a><\/b>\u00a0(also known as a jeweler’s screwdriver set).<\/span><\/p>\n

You may also be able to use a small\u00a0plastic pry bar tool<\/a><\/b>.<\/span><\/p>\n

The first step is turn over the fob and locate the sliding switch to release the backup \/ emergency metal ignition key.<\/span><\/p>\n

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Gently slide the switch to unlock the backup \/ emergency metal ignition key.<\/span><\/p>\n

Pull the ignition key straight out of its slot.<\/span><\/p>\n

Set the key aside in a safe place.<\/span><\/p>\n

Locate the small gap between the front and rear halves of the fob assembly.<\/span><\/p>\n

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Insert the small flat head screwdriver in between the two halves of the fob.<\/span><\/p>\n

Very gently and carefully pry apart the fob housing.<\/span><\/p>\n

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.<\/span><\/p>\n

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.<\/span><\/p>\n

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Set the back cover of the fob aside in a safe place.<\/span><\/p>\n

Locate the round black plastic battery cap.<\/span><\/p>\n

Gently pry off the battery socket cap with the small flat head screwdriver.<\/span><\/p>\n

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Set aside the round cap aside in a safe place.<\/span><\/p>\n

Use the flat head screwdriver to carefully lift the old battery out of the socket.<\/span><\/p>\n

Try to avoid damaging the plastic retaining tabs, scratching the green circuit board or bending the metal electrical contacts.<\/span><\/p>\n

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The OEM (original equipment manufacturer) battery part number in this 2019 CX-5 was a Panasonic CR 2025 3 volt lithium coin cell.<\/span><\/p>\n

Orientate the new CR2025 battery with the “+” positive side facing up towards you and the “-” negative side facing down into the socket.<\/span><\/p>\n

Lower the new battery into the holder.<\/span><\/p>\n

Gently pop the new battery down into place. Make sure it is flush in the socket.<\/span><\/p>\n

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Push the round plastic cap over the battery socket.<\/span><\/p>\n

The cap should “click” securely into place. Make sure the cap is fully seated.<\/span><\/p>\n

Line up the rear cover with the back side of the fob housing.<\/span><\/p>\n

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Gently snap together the two halves of the fob.<\/span><\/p>\n

Check to see if the two halves of the fob are flush together at every edge.<\/span><\/p>\n

Replace the metal ignition key by sliding it straight into its slot.<\/span><\/p>\n

The ignition key should “click” securely into the slot.<\/span><\/p>\n

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To test the new battery, stand near your SUV and press the “Unlock” or “Lock” buttons.<\/span>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.<\/span><\/p>\n

Note – You should not have to reprogram the key fob. Just changing the battery should not clear the original programming from the factory.<\/span><\/p>\n

Be sure to write down the procedure in your vehicle’s service records.<\/span><\/p>\n

Please check out all of my\u00a02017-2022 Mazda CX-5 DIY Repair & Maintenance Guides<\/a><\/b>.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

This automotive maintenance tutorial was specifically written to assist owners of the second generation (2017, 2018, 2019, 2020, 2021 and 2022) Mazda CX-5 SUV in changing the battery in the “smart” or “intelligent” key fob remote control for the “Advanced Keyless Entry System”. Owners of other Mazda vehicles such as the CX-3, CX-30, CX-7, CX-9, … Continue reading “2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 & 2025 Mazda CX-5 Smart Key Fob Battery Replacement DIY Guide”<\/span><\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7982","post","type-post","status-publish","format-standard","hentry","category-news-updates"],"_links":{"self":[{"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7982"}],"version-history":[{"count":4,"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7982\/revisions"}],"predecessor-version":[{"id":8013,"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7982\/revisions\/8013"}],"wp:attachment":[{"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/paulstravelpictures.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}