2012–2013 E140 (10th generation)
2012–2013 Toyota Corolla Key Fob Battery Type and Replacement
The 2012–2013 Toyota Corolla key fob takes a CR2016 (remote-head key, FCC GQ4-29T); some replacement remotes take CR2025/CR2032. Check the old battery before buying coin cell. How to open the fob without breaking it, and which substitutions actually work.
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Quick answer
The 2012–2013 Toyota Corolla key fob takes a CR2016 (remote-head key, FCC GQ4-29T); some replacement remotes take CR2025/CR2032. Check the old battery before buying coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars.
Replacing the 2012–2013 Toyota Corolla 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 Toyota Corolla model years does this cover?
These key fob battery specifications apply to every Toyota Corolla built from 2012 through 2013 — the E140 (10th generation), compact sedan. 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 2012–2013 Toyota Corolla
- 2012Carryover year for the 2011-facelifted E140; the 2.4L XRS was already discontinued (2010), so all cars are 1.8L 2ZR-FE
- 2013Final E140 year; Special Edition package added. All specs carry over.
2012–2013 Toyota Corolla key fob battery: common questions
What battery does the 2012–2013 Toyota Corolla key fob take?
- A single CR2016 (remote-head key, FCC GQ4-29T); some replacement remotes take CR2025/CR2032. Check the old battery before buying coin cell.
Can you use a CR2032 instead of a CR2025 in a 2012–2013 Toyota Corolla key fob?
- Usually. Both are 20 mm across; the 2032 is 3.2 mm thick against the 2025's 2.5 mm, so it holds more charge but is a tighter fit and can strain the contacts in a shallow housing. If the case will not close cleanly, use the specified CR2016 (remote-head key, FCC GQ4-29T); some replacement remotes take CR2025/CR2032. Check the old battery before buying.
How do you open a 2012–2013 Toyota Corolla 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
- Toyota technical data, Corolla E140 US fluids & capacities (toyota-club.net)
- Toyota Genuine Battery application chart 2023 (toyotapartsandservice.com)
- Toyota Genuine Spark Plug application chart 2020 (toyotapartsandservice.com)
- Toyota Genuine Oil Filter application chart 2020 (toyotapartsandservice.com)
- TirePressure.org, 2012 Toyota Corolla placard pressures
- fueleconomy.gov, 2012 Corolla EPA ratings
- NHTSA recalls by vehicle, 2012/2013 Toyota Corolla