Most 2017 key fobs use a CR2032 coin cell, but the exact size depends on the vehicle’s make and model. Always verify by inspecting the fob or consulting the owner’s manual.
The 2017 model year spans a wide range of vehicles, and key fob designs vary accordingly. This article explains the common battery sizes you might encounter, how to identify the correct one for your particular fob, and how to replace it safely.
Common battery sizes found in 2017 key fobs
Below are the coin-cell sizes that show up most often in 2017-era remotes. Not all models use these exact sizes, but they cover the majority of vehicles from that year.
- CR2032 — 20 mm diameter, 3.2 mm thick
- CR2025 — 20 mm diameter, 2.5 mm thick
- CR2016 — 20 mm diameter, 1.6 mm thick
- CR1632 — 16 mm diameter, 3.2 mm thick
- A23 (also sold as 23A) — smaller cylindrical coin cell used in some compact remotes
Knowing the correct size helps ensure a proper fit and reliable operation of the fob’s electronics.
How to identify and replace your key fob battery
Before attempting a replacement, verify the exact size by checking the back of the fob for a printed battery type or by comparing the old battery’s dimensions to a known coin cell. If the markings are unreadable, measure the battery and consult the owner’s manual or a dealer for confirmation.
- Open the key fob carefully. Use a small flat tool or a gentle twist to lift the back cover without breaking the case.
- Remove the old battery and note its code (for example CR2032). If the code is not visible, measure the coin’s diameter and thickness to identify the size.
- Insert the new battery of the exact same size, making sure the orientation is correct. The plus side typically faces up toward the contact springs.
- Reassemble the fob and test its functions by locking/unlocking doors or using the panic button to ensure everything works smoothly.
If you encounter resistance or are unsure about the fit, seek help from a dealership or automotive locksmith to avoid damaging the fob.
Brand-specific considerations
Because 2017-era fobs vary by manufacturer, always verify the exact battery size for your model. The owner’s manual or a dealership service department can confirm the correct coin cell (for example CR2032 vs CR2025) for your vehicle’s specific key fob.
Why model year matters
Even within the same brand, different trims or updated fob designs used across the 2017 model year may switch battery types. When in doubt, consult the manual, check the fob’s markings, or ask a technician to avoid buying the wrong size.
Summary
For most 2017 key fobs, the expected battery size is a CR2032 coin cell, but the exact size can vary by brand and model. Common alternatives you may encounter include CR2025, CR2016, CR1632, and A23. Always confirm by inspecting the fob, checking the owner’s manual, or contacting a dealer, then follow proper replacement steps and test the fob to ensure full functionality.