The most common battery for 2020-era key fobs is the CR2032 coin cell; some models use CR2025 or other similar sizes. Always verify with your vehicle’s manual or by inspecting the fob itself.
Understanding 2020 key fob batteries
The question spans many brands and designs, because car makers in 2020 used a variety of fob formats. While CR2032 is by far the most prevalent, a notable minority of models relied on slightly different coin cells. To be sure, check your owner's manual or open the fob to read the battery size printed on the old cell.
Common battery types by brand
Below is a snapshot of the typical coin-cell sizes you’re likely to encounter in 2020-era remotes. While CR2032 is the default, some vehicles use CR2025 or, less commonly, CR1632. Always confirm by looking at the battery inside the fob or consulting the manual for your specific model.
- CR2032: The standard choice for most modern fobs across many brands, including Toyota, Honda, Ford, Chevrolet, Hyundai, Kia, BMW, Mercedes, Nissan, Audi, and more.
- CR2025: Used by a subset of models with slimmer remotes or slightly different internal layouts.
- CR1632 or other small sizes: Rare in 2020 models, typically found in older or ultra-compact fobs.
Because there isn’t a single universal battery for all 2020 fobs, it’s essential to verify your specific vehicle. If you’re unsure, consult the owner’s manual, call the dealer, or inspect the fob pocket to identify the exact cell size printed on the old battery.
How to replace the battery safely
Replacing a 2020 key fob battery is usually straightforward, but the steps can vary by design. The guide below reflects the common approach used by many popular models, with variations depending on the exact fob shape and pocketing.
- Gather the correct battery size (most likely CR2032, but verify first; if in doubt, check the manual or the existing battery).
- Open the fob: Use a small flat tool or the designated seam to pry apart the halves. Some models require removing a mechanical key first.
- Remove the old battery: Note the orientation (positive side up) and take it out.
- Insert the new battery: Place it in the same orientation as the old one, ensuring it sits snugly.
- Test the fob: Press a button to confirm it communicates with the car before reassembling.
If the fob is sealed or you’re unsure about the process, a dealership or automotive locksmith can perform the replacement for a modest fee, often with guidance specific to your model.
Summary
For most 2020 key fobs, CR2032 is the default battery, with CR2025 as a common alternative and CR1632 rarely used. Since exact requirements vary by brand and model, always verify by checking your manual or the battery itself. Replacing a fob battery is typically quick and inexpensive, and professional help is available if you’d rather not DIY.