Infiniti QX80 key fob battery
6 of the 13 model years listed for the Infiniti QX80 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.
- 2014Smart key
CR2025
Owner's manual: manua.ls (checked Nov 1, 2026)
Manual text: “Recommended battery: CR2025 or equivalent.”
Find CR2025 on Amazon - 2015Smart key
Not confirmed yet
- 2016-2020Smart key
Not confirmed yet
- 2021Smart key
CR2025
FCC ID CWTWB1G744Two sites agree: uhs-hardware.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR2025 on Amazon - 2022Smart key
CR2025
Owner's manual: manua.ls (checked Nov 1, 2026)
Manual text: “Recommended battery: CR2025 or equivalent.”
Find CR2025 on Amazon - 2023Smart key
Not confirmed yet
- 2024Smart key
CR2025
Owner's manual: manua.ls (checked Nov 1, 2026)
Manual text: “Recommended battery: CR2025 or equivalent.”
Find CR2025 on Amazon - 2025Smart key
CR2032
FCC ID KRSTXPZ3Two sites agree: uhs-hardware.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2026Smart key
CR2032
Owner's manual: manua.ls (checked Nov 1, 2026)
Manual text: “Recommended battery: CR2032 or equivalent”
Find CR2032 on Amazon
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.
- Use the slot where the metal key sat. Twist, do not lever hard, and work along the seam until the halves separate.
- Pop the old battery out with a toothpick or plastic pick, not a metal blade, and seat the new one with the + side matching the old one.
- Reassemble, refit the emergency key, and check that the car sees the fob when you press start.
Infiniti Intelligent Keys normally hold a mechanical key behind a release knob; the slot behind it is where you pry.
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.
A CR2032 is 20 mm across and 3.2 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.