--- title: "2024-2025 Tesla Model 3 Key Fob Battery" description: "The 2024-2025 Tesla Model 3 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-3/2024-2025/key-fob-battery" updated: "2026-08-20" --- # 2024-2025 Tesla Model 3 Key Fob Battery Type and Replacement The 2024-2025 Tesla Model 3 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 2024-2025 Tesla Model 3 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 2024-2025 Tesla Model 3 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 3 model years does this cover? These key fob battery specifications apply to every Tesla Model 3 built from 2024 through 2025, the 2nd generation ('Highland' refresh), compact ev sedan (refreshed body, chassis, and interior). Nothing in this specification changes between those model years. - [2024 Model 3](https://whichcarparts.com/cars/tesla/model-3/2024) - [2025 Model 3](https://whichcarparts.com/cars/tesla/model-3/2025) ## What changed during the 2024-2025 Tesla Model 3 | Years | What changed | | --- | --- | | 2024 | Highland launch (US orders Jan 2024): new fascias, ride-tuned suspension, quieter cabin with acoustic glass, stalk-less interior (turn signals on wheel buttons), ventilated front seats, rear touchscreen. RWD and Long Range AWD at launch; Performance ('Ludicrous') arrived April 2024 with 510 hp and staggered 20-in wheels | | 2025 | Long Range RWD (363 mi) joins the lineup; front bumper camera and other running changes appear on later builds | ## 2024-2025 Tesla Model 3 key fob battery: common questions ### What battery does the 2024-2025 Tesla Model 3 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 2024-2025 Tesla Model 3 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 2024-2025 Tesla Model 3 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 Support, Vehicle Maintenance (Model 3 intervals: cabin filter 2 yr, brake fluid 4 yr, rotation 6,250 mi, no desiccant for heat-pump cars)](https://www.tesla.com/support/vehicle-maintenance) - [Wheel-Size.com, 2024 Tesla Model 3 OE fitments and 42 psi pressures](https://www.wheel-size.com/size/tesla/model-3/2024/) - [Mavis, 2025 Model 3 Performance staggered OE sizes (235/35R20 front, 275/30R20 rear)](https://www.mavis.com/vehicle/tesla/model-3/2025/performance/) - [NHTSA Part 573 report, recall 25V-002 (vehicle computer / rearview camera)](https://static.nhtsa.gov/odi/rcl/2025/RCLRPT-25V002-6930.PDF) - [NHTSA Part 573 report, recall 24V-376 (seat belt reminder)](https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V376-3527.PDF) - [NHTSA Part 573 report, recall 24V-935 (TPMS warning light)](https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V935-1846.PDF) - [Tesla Shop. Model 3 wiper blade (fits all Model 3 years)](https://shop.tesla.com/product/model-3-wiper-blade) - [Tesla DIY Guide, Replacing Cabin Filters (procedure shared with pre-Highland cars)](https://service.tesla.com/docs/Public/diy/model3/en_us/GUID-DB0A1E3C-926E-498C-A2FD-A27B8421A471.html) - [Wikipedia, Tesla Model 3 (Highland launch timing, curb weights, EPA ranges)](https://en.wikipedia.org/wiki/Tesla_Model_3) ## Other Tesla Model 3 generations - [2017-2023 Tesla Model 3 key fob battery](https://whichcarparts.com/cars/tesla/model-3/2017-2023/key-fob-battery) Or [compare all generations](https://whichcarparts.com/cars/tesla/model-3/key-fob-battery). ## More for the 2024-2025 Tesla Model 3 - [Oil & filter](https://whichcarparts.com/cars/tesla/model-3/2024-2025/oil) - [Battery](https://whichcarparts.com/cars/tesla/model-3/2024-2025/battery) - [Tires & wheels](https://whichcarparts.com/cars/tesla/model-3/2024-2025/tires) - [Wiper blades](https://whichcarparts.com/cars/tesla/model-3/2024-2025/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/tesla/model-3/2024-2025/filters) - [Bulbs](https://whichcarparts.com/cars/tesla/model-3/2024-2025/bulbs) - [Brakes](https://whichcarparts.com/cars/tesla/model-3/2024-2025/brakes) - [Fluids](https://whichcarparts.com/cars/tesla/model-3/2024-2025/fluids) - [Service schedule](https://whichcarparts.com/cars/tesla/model-3/2024-2025/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/tesla/model-3/2024-2025/common-problems) - [Specs](https://whichcarparts.com/cars/tesla/model-3/2024-2025/specs) Specifications vary with engine option, production date, and market.