--- title: "2025 Tesla Model Y Key Fob Battery" description: "The 2025 Tesla Model Y key fob takes a CR2032 (optional accessory key fob); key card and phone key have no battery coin cell. How to open the fob without breaking it, and which substitutions actually work." url: "https://whichcarparts.com/cars/tesla/model-y/2025/key-fob-battery" updated: "2026-08-20" --- # 2025 Tesla Model Y Key Fob Battery Type and Replacement The 2025 Tesla Model Y key fob takes a CR2032 (optional accessory key fob); key card and phone key have no battery coin cell. How to open the fob without breaking it, and which substitutions actually work. **Quick answer**: The 2025 Tesla Model Y key fob takes a CR2032 (optional accessory key fob); key card and phone key have no battery coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars. ## Replacing the 2025 Tesla Model Y 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 Tesla Model Y model years does this cover? These key fob battery specifications apply to every Tesla Model Y built from 2025 through 2025, the 2nd generation ('Juniper' refresh), compact electric crossover suv (refreshed body, light-bar front/rear). Nothing in this specification changes between those model years. - [2025 Model Y](https://whichcarparts.com/cars/tesla/model-y/2025) ## What changed during the 2025 Tesla Model Y | Years | What changed | | --- | --- | | 2025 | US Juniper deliveries began March 2025 with the loaded Launch Series (LR AWD); standard Long Range AWD and RWD followed mid-year. Note: some legacy-body cars were also sold as early 2025 models. Check the front end (full-width light bar = Juniper). Performance (21-in Arachnid 2.0, ~460 hp) and the decontented Standard trim arrived October 2025 as 2026 models. | ## 2025 Tesla Model Y key fob battery: common questions ### What battery does the 2025 Tesla Model Y key fob take? A single CR2032 (optional accessory key fob); key card and phone key have no battery coin cell. ### Can you use a CR2032 instead of a CR2025 in a 2025 Tesla Model Y key fob? This fob takes a CR2032 (optional accessory key fob); key card and phone key have no battery, 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 2025 Tesla Model Y 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 - [Tesla Model Y Owner's Manual (2025+), Wheels and Tires](https://www.tesla.com/ownersmanual/modely/en_us/GUID-FDDB10EF-FFA9-46EB-B8CC-03614AE92B6B.html) - [Tesla DIY, Replacing Cabin Air Filters (Feb-2025 production changes)](https://service.tesla.com/docs/Public/diy/modely/en_us/GUID-1C689042-6645-4617-B270-7F2DA9A5624E.html) - [Tesla Support, Vehicle Maintenance (official intervals)](https://www.tesla.com/support/car-maintenance) - [Car and Driver, 2025 Model Y (Juniper) US details, 327-mi EPA range](https://www.caranddriver.com/news/a63541277/2025-tesla-model-y-us-details-price/) - [T Sportline, Model Y Juniper wheel & tire guide (Crossflow/Helix/Arachnid OE fitments)](https://tsportline.com/blogs/tesla-aftermarket-support/the-tesla-model-y-juniper-wheel-guide) - [NHTSA recall lookup, 2025 Tesla Model Y (25V-002, 26V-315)](https://www.nhtsa.gov/recalls) - [Kelley Blue Book, 2025 Model Y ranges](https://www.kbb.com/tesla/model-y/2025/) - [Wikipedia, Tesla Model Y (Juniper timeline, Performance/Standard 2026 launch)](https://en.wikipedia.org/wiki/Tesla_Model_Y) ## Other Tesla Model Y generations - [2020-2024 Tesla Model Y key fob battery](https://whichcarparts.com/cars/tesla/model-y/2020-2024/key-fob-battery) Or [compare all generations](https://whichcarparts.com/cars/tesla/model-y/key-fob-battery). ## More for the 2025 Tesla Model Y - [Oil & filter](https://whichcarparts.com/cars/tesla/model-y/2025/oil) - [Battery](https://whichcarparts.com/cars/tesla/model-y/2025/battery) - [Tires & wheels](https://whichcarparts.com/cars/tesla/model-y/2025/tires) - [Wiper blades](https://whichcarparts.com/cars/tesla/model-y/2025/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/tesla/model-y/2025/filters) - [Bulbs](https://whichcarparts.com/cars/tesla/model-y/2025/bulbs) - [Brakes](https://whichcarparts.com/cars/tesla/model-y/2025/brakes) - [Fluids](https://whichcarparts.com/cars/tesla/model-y/2025/fluids) - [Service schedule](https://whichcarparts.com/cars/tesla/model-y/2025/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/tesla/model-y/2025/common-problems) - [Specs](https://whichcarparts.com/cars/tesla/model-y/2025/specs) Specifications vary with engine option, production date, and market.