---
title: "2020-2025 Hyundai Sonata Key Fob Battery: CR2032"
description: "The 2020-2025 Hyundai Sonata 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/sonata/2020-2025/key-fob-battery"
updated: "2026-08-21"
---

# 2020-2025 Hyundai Sonata Key Fob Battery Type and Replacement

The 2020-2025 Hyundai Sonata key fob takes a CR2032 coin cell. How to open the fob without breaking it, and which substitutions actually work.

**Quick answer**: The 2020-2025 Hyundai Sonata key fob takes a CR2032 coin-cell battery, available at any pharmacy, hardware store, or online for a few dollars.

## Replacing the 2020-2025 Hyundai Sonata 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 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.

- [2020 Sonata](https://whichcarparts.com/cars/hyundai/sonata/2020)
- [2021 Sonata](https://whichcarparts.com/cars/hyundai/sonata/2021)
- [2022 Sonata](https://whichcarparts.com/cars/hyundai/sonata/2022)
- [2023 Sonata](https://whichcarparts.com/cars/hyundai/sonata/2023)
- [2024 Sonata](https://whichcarparts.com/cars/hyundai/sonata/2024)
- [2025 Sonata](https://whichcarparts.com/cars/hyundai/sonata/2025)

## What changed during the 2020-2025 Hyundai Sonata

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

## 2020-2025 Hyundai Sonata key fob battery: common questions

### 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.

## Sources

- [Wikipedia, Hyundai Smartstream engine family (G1.6T, G1.6T Hybrid, displacement/output data)](https://en.wikipedia.org/wiki/Hyundai_Smartstream_engine)
- [AMSoil lookup, 2022 Sonata 2.5L oil viscosity/capacity](https://www.amsoil.com/lookup/auto-and-light-truck/2022/hyundai/sonata/2-5l-4-cyl-engine-code-a-a/)
- [Costa Oils, 2023 Sonata 2.5L Turbo (N Line) oil guide](https://costaoils.com/2023-hyundai-sonata-2-5l-turbo-oil-change-guide-2/)
- [Hyundai Forums, N Line owner's manual 0W-30 vs. 0W-20 cap discussion](https://www.hyundai-forums.com/threads/0w-20-oil-only-one-listed.671641/)
- [Goodyear, 2024 Sonata factory tire fitments by trim](https://www.goodyear.com/en-us/vehicles/Hyundai/Sonata/2024)
- [Headquarter Hyundai, 2020 Sonata fuel tank capacity and EPA mpg](https://www.headquarterhyundai.com/research/2020-hyundai-sonata-mpg/)
- [US News, 2021 Sonata Limited 1.6T engine specs](https://cars.usnews.com/cars-trucks/hyundai/sonata/2021/specs/sonata-limited-1-6t-416162)
- [Go-Parts, 2021-2024 Hyundai/Kia 2.5L Smartstream (G4KN) oil dilution/piston-ring notes](https://www.go-parts.com/garage/engine-complete-assembly-kia-sorento-hyundai-santa-fe-hyundai-sonata-2021-2024)

## Other Hyundai Sonata generations

- [2015-2019 Hyundai Sonata key fob battery](https://whichcarparts.com/cars/hyundai/sonata/2015-2019/key-fob-battery)
- [2011-2014 Hyundai Sonata key fob battery](https://whichcarparts.com/cars/hyundai/sonata/2011-2014/key-fob-battery)

Or [compare all generations](https://whichcarparts.com/cars/hyundai/sonata/key-fob-battery).

## More for the 2020-2025 Hyundai Sonata

- [Oil & filter](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/oil)
- [Battery](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/battery)
- [Tires & wheels](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/tires)
- [Wiper blades](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/wipers)
- [Air & cabin filters](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/filters)
- [Bulbs](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/bulbs)
- [Brakes](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/brakes)
- [Fluids](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/fluids)
- [Service schedule](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/service-schedule)
- [Problems & reliability](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/common-problems)
- [Oil light reset](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/oil-reset)
- [Specs](https://whichcarparts.com/cars/hyundai/sonata/2020-2025/specs)

Specifications vary with engine option, production date, and market.