2024–2025 2nd generation ('Highland' refresh)
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.
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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. Pick your year for the engines it offered, what changed that year, and the problems recorded against it.
What changed during the 2024–2025 Tesla Model 3
- 2024Highland 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
- 2025Long 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)
- Wheel-Size.com, 2024 Tesla Model 3 OE fitments and 42 psi pressures
- Mavis, 2025 Model 3 Performance staggered OE sizes (235/35R20 front, 275/30R20 rear)
- NHTSA Part 573 report, recall 25V-002 (vehicle computer / rearview camera)
- NHTSA Part 573 report, recall 24V-376 (seat belt reminder)
- NHTSA Part 573 report, recall 24V-935 (TPMS warning light)
- Tesla Shop. Model 3 wiper blade (fits all Model 3 years)
- Tesla DIY Guide, Replacing Cabin Filters (procedure shared with pre-Highland cars)
- Wikipedia, Tesla Model 3 (Highland launch timing, curb weights, EPA ranges)