Infiniti G20 key fob battery
3 of the 4 model years listed for the Infiniti G20 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.
- 1999Remote (separate)
CR2025
FCC ID KBRASTU09Two sites agree: americankeysupply.com and remotesandkeys.com (checked Nov 2, 2026)
Find CR2025 on Amazon - 2000Remote (separate)
CR2025
FCC ID KBRASTU09Two sites agree: americankeysupply.com and remotesandkeys.com (checked Nov 2, 2026)
Find CR2025 on Amazon - 2001Remote (separate)
CR2025
FCC ID KBRASTU09Two sites agree: americankeysupply.com and remotesandkeys.com (checked Nov 2, 2026)
Find CR2025 on Amazon - 2002Remote (separate)
Not confirmed yet
Changing the battery
Separate remote fob
- A separate fob has no key blade inside, so it opens with nothing but a coin or a small screwdriver.
- Look for a screw on the back or a notch on the edge. Remove the screw if present, then twist a coin in the notch to split the case.
- Swap the cell or cells, keeping the same side up as the old ones.
- Reassemble and test from a short distance.
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.
Keep spare coin cells away from small children. A swallowed coin cell can burn the throat within hours; if it happens, go to an emergency room at once.