2012 B16 (6th generation, final year)
2012 Nissan Sentra Key Fob Battery Type and Replacement
The 2012 Nissan Sentra key fob takes a CR2025 (Intelligent Key and keyfob remote) coin cell. How to open the fob without breaking it, and which substitutions actually work.
Last verified
Quick answer
The 2012 Nissan Sentra key fob takes a CR2025 (Intelligent Key and keyfob remote) coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars.
Replacing the 2012 Nissan Sentra 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 Nissan Sentra model years does this cover?
These key fob battery specifications apply to every Nissan Sentra built from 2012 through 2012 — the B16 (6th generation, final year), 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 Nissan Sentra
- 2012Final year of the B16 generation and the last year for the SE-R and SE-R Spec V performance trims. This file covers 2012 only; 2007–2011 cars are mechanically similar.
2012 Nissan Sentra key fob battery: common questions
What battery does the 2012 Nissan Sentra key fob take?
- A single CR2025 (Intelligent Key and keyfob remote) coin cell.
Can you use a CR2032 instead of a CR2025 in a 2012 Nissan Sentra 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 CR2025 (Intelligent Key and keyfob remote).
How do you open a 2012 Nissan Sentra 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
- 2012 Nissan Sentra Owner's Manual (capacities, tires, plugs, CVT NS-2, CR2025)
- AMSOIL lookup, 2012 Sentra 2.0L MR20DE (5W-30, 4.1 qt, drain plug 22–29 ft-lb)
- Goodyear tire fitment, 2012 Nissan Sentra by trim
- Nissan parts, 16546-ET00J engine air filter, 2007–2012 Sentra
- Nissan parts, 22401-JA01B spark plug, 2008–2012 Sentra 2.0
- CarComplaints, 2012 Sentra transmission failure reports
- fueleconomy.gov, 2012 Nissan Sentra EPA ratings