Fiat 124 Spider key fob battery
1 of the 4 model years listed for the Fiat 124 Spider have a proven battery. The most common answer is CR2025. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2017Smart key
CR2025
FCC ID WAZSKE13D01Two sites agree: americankeysupply.com and uhs-hardware.com (checked Nov 1, 2026)
Find CR2025 on Amazon - 2018Smart key
Not confirmed yet
- 2019Unknown
Not confirmed yet
- 2020Unknown
Not confirmed yet
Changing the battery
Smart key (push-button start)
- Find the small release on the edge or back of the fob and hold it while you pull out the metal emergency key.
- The gap left by the metal key usually has a pry point. A slow twist with a thin flat tool (tape on the tip saves the plastic) opens the two halves.
- Before you take the old cell out, look at its face. Put the new cell in with the same side showing, and avoid touching both faces at once.
- Snap the halves back together, slide the metal key home, and press each button, then try the start button from the driver's seat.
A CR2025 is 20 mm across and 2.5 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.