2025 2nd generation ('Juniper' refresh)
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.
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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. Pick your year for the engines it offered, what changed that year, and the problems recorded against it.
What changed during the 2025 Tesla Model Y
- 2025US 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
- Tesla DIY, Replacing Cabin Air Filters (Feb-2025 production changes)
- Tesla Support, Vehicle Maintenance (official intervals)
- Car and Driver, 2025 Model Y (Juniper) US details, 327-mi EPA range
- T Sportline, Model Y Juniper wheel & tire guide (Crossflow/Helix/Arachnid OE fitments)
- NHTSA recall lookup, 2025 Tesla Model Y (25V-002, 26V-315)
- Kelley Blue Book, 2025 Model Y ranges
- Wikipedia, Tesla Model Y (Juniper timeline, Performance/Standard 2026 launch)