--- title: "2012-2016 Hyundai Elantra Key Fob Battery: CR2032" description: "The 2012-2016 Hyundai Elantra key fob takes a CR2032 coin cell. How to open the fob without breaking it, and which substitutions actually work." url: "https://whichcarparts.com/cars/hyundai/elantra/2012-2016/key-fob-battery" updated: "2026-08-21" --- # 2012-2016 Hyundai Elantra Key Fob Battery Type and Replacement The 2012-2016 Hyundai Elantra key fob takes a CR2032 coin cell. How to open the fob without breaking it, and which substitutions actually work. **Quick answer**: The 2012-2016 Hyundai Elantra key fob takes a CR2032 coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars. ## Replacing the 2012-2016 Hyundai Elantra 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 Hyundai Elantra model years does this cover? These key fob battery specifications apply to every Hyundai Elantra built from 2012 through 2016, the MD/UD (5th generation), compact sedan (also sold as coupe 2013-2014 and gt 5-door hatchback through 2016 on the related ud platform). Nothing in this specification changes between those model years. - [2012 Elantra](https://whichcarparts.com/cars/hyundai/elantra/2012) - [2013 Elantra](https://whichcarparts.com/cars/hyundai/elantra/2013) - [2014 Elantra](https://whichcarparts.com/cars/hyundai/elantra/2014) - [2015 Elantra](https://whichcarparts.com/cars/hyundai/elantra/2015) - [2016 Elantra](https://whichcarparts.com/cars/hyundai/elantra/2016) ## What changed during the 2012-2016 Hyundai Elantra | Years | What changed | | --- | --- | | 2012 | MD generation launch (sedan only) | | 2013 | Elantra Coupe and Elantra GT (UD platform hatchback) join the lineup with the 2.0L Nu GDI available; Elantra Sport sedan trim added | | 2014 | Facelift: revised front/rear fascias, new wheel designs | | 2015-2016 | Sedan carries over largely unchanged in its final two years before the AD redesign; GT hatchback continues into 2017 on the related UD platform after the sedan moves to AD | ## 2012-2016 Hyundai Elantra key fob battery: common questions ### What battery does the 2012-2016 Hyundai Elantra key fob take? A single CR2032 coin cell. ### Can you use a CR2032 instead of a CR2025 in a 2012-2016 Hyundai Elantra key fob? This fob takes a CR2032, 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 2012-2016 Hyundai Elantra 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 - [AMSOIL lookup, 2012 Elantra 1.8L oil spec/capacity](https://www.amsoil.com/lookup/auto-and-light-truck/2012/hyundai/elantra/1-8l-4-cyl-engine-code-e-7/) - [AMSOIL lookup, 2014 Elantra 2.0L GDI oil spec/capacity](https://www.amsoil.com/lookup/auto-and-light-truck/2014/hyundai/elantra/2-0l-4-cyl-engine-code-h-1/) - [PR Newswire, 2014 Hyundai Elantra Coupe 2.0L GDI 'Nu' engine specs (173 hp)](https://www.prnewswire.com/news-releases/2014-hyundai-elantra-coupe-ups-fun-factor-232754401.html) - [NHTSA recall 23V-651, ABS module internal leak / fire risk](https://api.nhtsa.gov/recalls/recallsByVehicle?make=hyundai&model=elantra&modelYear=2013) - [NHTSA recall 15V-871, ESC unintended braking](https://api.nhtsa.gov/recalls/recallsByVehicle?make=hyundai&model=elantra&modelYear=2012) - [NHTSA recall 13V-115, side curtain airbag bracket](https://api.nhtsa.gov/recalls/recallsByVehicle?make=hyundai&model=elantra&modelYear=2012) - [Hyundai Nu Engine class-action settlement overview, BBB National Programs](https://bbbprograms.org/programs/dr/class-action/hyundai-nu) - [Hyundai Motor America press release, 2022 Engine II litigation settlement](https://www.hyundainews.com/releases/3657) - [fueleconomy.gov, 2013 Elantra EPA ratings (all trims)](https://www.fueleconomy.gov/feg/bymodel/2013_Hyundai_Elantra.shtml) - [Edmunds, 2013 Elantra specs (curb weight, fuel tank)](https://www.edmunds.com/hyundai/elantra/2013/features-specs/) - [Hyundai/Kia OEM oil filter 26300-35505 fitment listing](https://hyundai.oempartsonline.com/oem-parts/hyundai-oil-filter-2630035505) - [wheel-size.com, Elantra MD/UD OE tire and wheel fitments](https://www.wheel-size.com/size/hyundai/elantra/2013/) ## Other Hyundai Elantra generations - [2021-2025 Hyundai Elantra key fob battery](https://whichcarparts.com/cars/hyundai/elantra/2021-2025/key-fob-battery) - [2017-2020 Hyundai Elantra key fob battery](https://whichcarparts.com/cars/hyundai/elantra/2017-2020/key-fob-battery) Or [compare all generations](https://whichcarparts.com/cars/hyundai/elantra/key-fob-battery). ## More for the 2012-2016 Hyundai Elantra - [Oil & filter](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/oil) - [Battery](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/battery) - [Tires & wheels](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/tires) - [Wiper blades](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/filters) - [Bulbs](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/bulbs) - [Brakes](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/brakes) - [Fluids](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/fluids) - [Service schedule](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/common-problems) - [Oil light reset](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/oil-reset) - [Specs](https://whichcarparts.com/cars/hyundai/elantra/2012-2016/specs) Specifications vary with engine option, production date, and market.