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Key fob battery size by car make
The CR2032 is the most common key fob battery: it is the main size for 18 of the 23 makes below. Ford and Lincoln push-button fobs use the bigger CR2450, many Mercedes keys the thinner CR2025, and many Toyota and Lexus smart keys the smaller CR1632.
| Make | Most common | Also used |
|---|---|---|
| Toyota | CR2032 (20 mm × 3.2 mm) | CR1632, CR2016 (older) |
| Lexus | CR2032 (20 mm × 3.2 mm) | CR1632 |
| Honda | CR2032 (20 mm × 3.2 mm) | CR1616 (older) |
| Acura | CR2032 (20 mm × 3.2 mm) | CR1616 (older) |
| Ford | CR2450 (24.5 mm × 5 mm) | CR2032 |
| Lincoln | CR2450 (24.5 mm × 5 mm) | CR2032 |
| Chevrolet | CR2032 (20 mm × 3.2 mm) | CR2025 (older) |
| GMC | CR2032 (20 mm × 3.2 mm) | CR2025 (older) |
| Nissan | CR2032 (20 mm × 3.2 mm) | CR2025 |
| Infiniti | CR2032 (20 mm × 3.2 mm) | CR2025 |
| Hyundai | CR2032 (20 mm × 3.2 mm) | – |
| Kia | CR2032 (20 mm × 3.2 mm) | – |
| Subaru | CR2032 (20 mm × 3.2 mm) | CR1620 (older) |
| Mazda | CR2025 (20 mm × 2.5 mm) | CR2032, CR1620 (older) |
| Mercedes-Benz | CR2025 (20 mm × 2.5 mm) | CR2032 |
| BMW | CR2032 (20 mm × 3.2 mm) | CR2450 (older) |
| Volkswagen | CR2032 (20 mm × 3.2 mm) | – |
| Audi | CR2032 (20 mm × 3.2 mm) | CR2025 (older) |
| Jeep | CR2032 (20 mm × 3.2 mm) | CR2450 |
| Ram | CR2032 (20 mm × 3.2 mm) | CR2450 |
| Dodge | CR2032 (20 mm × 3.2 mm) | – |
| Tesla | CR2032 (20 mm × 3.2 mm) | – |
| Volvo | CR2430 (24.5 mm × 3 mm) | CR2032 |
Key types change between model years. The code on your old battery is the final word.