2012–2016 Hyundai Elantra Key Fob Battery Type and Replacement

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. Pick your year for the engines it offered, what changed that year, and the problems recorded against it.

What changed during the 2012–2016 Hyundai Elantra

• 2012MD generation launch (sedan only)
• 2013Elantra Coupe and Elantra GT (UD platform hatchback) join the lineup with the 2.0L Nu GDI available; Elantra Sport sedan trim added
• 2014Facelift: revised front/rear fascias, new wheel designs
• 2015–2016Sedan 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

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.