2020–2024 1st generation (original body)
2020–2024 Tesla Model Y Key Fob Battery Type and Replacement
The 2020–2024 Tesla Model Y key fob takes a CR2032 (optional accessory key fob). The standard key card and phone key have no battery to replace. coin cell. How to open the fob without breaking it, and which substitutions actually work.
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Quick answer
The 2020–2024 Tesla Model Y key fob takes a CR2032 (optional accessory key fob). The standard key card and phone key have no battery to replace. coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars.
Replacing the 2020–2024 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 2020 through 2024 — the 1st generation (original body), compact electric crossover suv (5- or 7-seat). 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 2020–2024 Tesla Model Y
- 2020US deliveries began March 2020 with Long Range AWD and Performance only. 12V lead-acid battery; no HEPA filter.
- 2021Standard Range RWD sold January–February 2021 only (244 mi); 7-seat option added; late-2021 builds gained the ~16V lithium-ion low-voltage battery and (from ~2022 production) the HEPA filter
- 2022Austin-built Standard Range AWD with 4680 structural pack begins (limited availability); AMD Ryzen infotainment replaces Intel Atom during the year
- 20234680 Standard Range AWD sold publicly April–September; last full year of the original body
- 2024RWD base model (260 mi, software-limited) from October 2023; renamed/unlocked to Long Range RWD (320 mi) in May 2024. Some carryover legacy cars were also titled as early 2025s
2020–2024 Tesla Model Y key fob battery: common questions
What battery does the 2020–2024 Tesla Model Y key fob take?
- A single CR2032 (optional accessory key fob). The standard key card and phone key have no battery to replace. coin cell.
Can you use a CR2032 instead of a CR2025 in a 2020–2024 Tesla Model Y key fob?
- This fob takes a CR2032 (optional accessory key fob). The standard key card and phone key have no battery to replace., 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 2020–2024 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, Wheels and Tires (sizes, lug torque)
- Tesla DIY, Replacing Cabin Air Filters (Model Y)
- Tesla DIY, Replacing Wiper Blades (Model Y, 26/20 in)
- Tesla DIY, Replacing the Low Voltage Lead-Acid Battery (85B24LS 12V 45Ah)
- Tesla Support, Vehicle Maintenance (official intervals)
- Tesla Model Y Service Manual, Brakes (rotor diameters)
- NHTSA recall lookup, Tesla Model Y 2020–2024 (all campaign numbers)
- Car and Driver, 2020 Model Y Long Range AWD specs (curb weight, towing, hp)
- Wikipedia, Tesla Model Y (US variant timeline, 4680 AWD, RWD unlock)
- Tesla Shop, Model 3/Y cabin air filter (two required)