2020–2025 Hyundai Sonata Key Fob Battery Type and Replacement

Which Hyundai Sonata model years does this cover?

These key fob battery specifications apply to every Hyundai Sonata built from 2020 through 2025 — the DN8 (8th generation), mid-size 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 2020–2025 Hyundai Sonata

• 2020Generation launch; 2.5L and 1.6T gas engines, plus Hybrid, at launch
• 2021N Line trim introduced with the 2.5T Smartstream engine; 1.6T dropped from most trims
• 2022N Line Night Edition appearance package added; panoramic sunroof newly available
• 2023SEL trim gains a larger touchscreen infotainment system with navigation; Highway Driving Assist added to the driver-assist suite
• 2024Facelift with revised front/rear styling and updated interior tech

What battery does the 2020–2025 Hyundai Sonata key fob take?

A single CR2032 coin cell.

Can you use a CR2032 instead of a CR2025 in a 2020–2025 Hyundai Sonata 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 2020–2025 Hyundai Sonata 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.