--- title: "2017-2025 Mazda CX-5 Key Fob Battery: CR2032" description: "The 2017-2025 Mazda CX-5 key fob takes a CR2032 coin cell. How to open the fob without breaking it, and which substitutions actually work." url: "https://whichcarparts.com/cars/mazda/cx-5/2017-2025/key-fob-battery" updated: "2026-08-21" --- # 2017-2025 Mazda CX-5 Key Fob Battery Type and Replacement The 2017-2025 Mazda CX-5 key fob takes a CR2032 coin cell. How to open the fob without breaking it, and which substitutions actually work. **Quick answer**: The 2017-2025 Mazda CX-5 key fob takes a CR2032 coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars. ## Replacing the 2017-2025 Mazda CX-5 key fob battery - Pry the fob open gently at the seam with a small flathead screwdriver or a coin, working around the edge. Many fobs have a hidden release slot near the key ring or emergency-key blade. - Note the battery orientation (usually positive side up) before removing the old cell. - Avoid touching the new battery's faces with bare fingers; skin oils can shorten its life. - If the fob doesn't work after replacement, check that the battery is seated fully and the contacts weren't bent. Most vehicles do not need re-pairing after a battery change. ## Which Mazda CX-5 model years does this cover? These key fob battery specifications apply to every Mazda CX-5 built from 2017 through 2025, the KF (2nd generation), compact suv. Nothing in this specification changes between those model years. - [2017 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2017) - [2018 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2018) - [2019 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2019) - [2020 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2020) - [2021 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2021) - [2022 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2022) - [2023 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2023) - [2024 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2024) - [2025 CX-5](https://whichcarparts.com/cars/mazda/cx-5/2025) ## What changed during the 2017-2025 Mazda CX-5 | Years | What changed | | --- | --- | | 2017 | All-new KF generation on a stiffer platform; 2.0L dropped from the US lineup, 2.5L becomes the sole gas engine | | 2018 | Cylinder deactivation added to the 2.5L; g-Vectoring Control standard | | 2019 | 2.5L Turbo and 2.2L SkyActiv-D diesel both introduced (diesel on Signature trim only) | | 2020 | Diesel discontinued after this model year due to low take rate | | 2022 | Mid-cycle refresh: revised front/rear styling, wheel designs, and more standard driver-assist tech; mechanical specs carry over | | 2024 | Trim names simplified (2.5 S, 2.5 S Select, 2.5 S Preferred, 2.5 Turbo, etc.); final CX-5 model year before the 2026 all-new third generation | ## 2017-2025 Mazda CX-5 key fob battery: common questions ### What battery does the 2017-2025 Mazda CX-5 key fob take? A single CR2032 coin cell. ### Can you use a CR2032 instead of a CR2025 in a 2017-2025 Mazda CX-5 key fob? This fob takes a CR2032, so start there. The two cells share a 20 mm diameter but differ in thickness, and the thicker one does not always seat in a housing built for the thinner. ### How do you open a 2017-2025 Mazda CX-5 key fob? Slide out the mechanical emergency key first, which usually releases a catch, then part the halves with a plastic pry tool or a coin wrapped in tape. A screwdriver will mark the case and can crack the seam. ## Sources - [Mazda USA official 2019 CX-5 owner's manual, engine/electrical specifications (battery Ah, spark plug part numbers)](https://www.mazdausa.com/static/manuals/2019/cx5/contents/10020101.html) - [Mazda USA official 2019 CX-5 owner's manual, coolant/lubricant classifications](https://www.mazdausa.com/static/manuals/2019/cx5/contents/10020100.html) - [Mazda USA official 2025 CX-5 owner's manual, scheduled maintenance intervals](https://www.mazdausa.com/static/manuals/2025/cx-5/contents/07020201.html) - [NHTSA recall 18V-426, side curtain air bags](https://api.nhtsa.gov/recalls/recallsByVehicle?make=mazda&model=cx-5&modelYear=2018) - [NHTSA recall 19V-497, PCM software stall](https://api.nhtsa.gov/recalls/recallsByVehicle?make=mazda&model=cx-5&modelYear=2018) - [NHTSA recall 21V-875, low-pressure fuel pump](https://api.nhtsa.gov/recalls/recallsByVehicle?make=mazda&model=cx-5&modelYear=2019) - [NHTSA TSB library, Service Alert SA-041/18 rocker arm inspection (cylinder deactivation)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10159203-0001.pdf) - [Mazda Connect Infotainment Settlement, official settlement site (class definition: CX-5 2016-2020)](https://www.mazdainfotainmentsettlement.com/) - [ClassAction.org, 2021 Mazda valve stem seal oil consumption proposed class action](https://www.classaction.org/news/five-2021-mazda-vehicle-models-burn-excessive-oil-due-to-defect-class-action-says) - [CarCostCanada, 2019 CX-5 Signature Diesel road test (168 hp / 290 lb-ft)](https://carcostcanada.com/blog/2019-mazda-cx-5-signature-diesel-road-test/) - [Wikipedia, Mazda CX-5 second generation engine history](https://en.wikipedia.org/wiki/Mazda_CX-5) - [Mazda parts forum, PY8W-14-302 turbo oil filter and 5.1 qt fill confirmation](https://mazdas247.com/forum/threads/oil-filter-2-5l-turbo.123872068/) ## Other Mazda CX-5 generations - [2013-2016 Mazda CX-5 key fob battery](https://whichcarparts.com/cars/mazda/cx-5/2013-2016/key-fob-battery) Or [compare all generations](https://whichcarparts.com/cars/mazda/cx-5/key-fob-battery). ## More for the 2017-2025 Mazda CX-5 - [Oil & filter](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/oil) - [Battery](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/battery) - [Tires & wheels](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/tires) - [Wiper blades](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/filters) - [Bulbs](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/bulbs) - [Brakes](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/brakes) - [Fluids](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/fluids) - [Service schedule](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/common-problems) - [Oil light reset](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/oil-reset) - [Specs](https://whichcarparts.com/cars/mazda/cx-5/2017-2025/specs) Specifications vary with engine option, production date, and market.