Infiniti QX50 key fob battery
11 of the 12 model years listed for the Infiniti QX50 have a proven battery. The most common answer is CR2032. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2014-2017Smart key
CR2032
FCC ID X32-APKN1G01; X32-NSSSG010Two sites agree: cdn.shopify.com and energizer.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2018Smart key
Not confirmed yet
- 2019-2020Smart key
CR2032
FCC ID KR5TXN1Two sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2021-2023Smart key
CR2032
FCC ID KR5TXN1Two sites agree: royalkeysupply.com and americankeysupply.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2024-2025Smart key
CR2032
FCC ID KR5TXN1Two sites agree: americankeysupply.com and abkeys.com (checked Nov 1, 2026)
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.
- Note which side of the old coin cell faces up (usually the side with the writing), lift it out with a plastic tool, and press the new one in the same way.
- Snap the halves back together, slide the metal key home, and press each button, then try the start button from the driver's seat.
Infiniti Intelligent Keys normally hold a mechanical key behind a release knob; the slot behind it is where you pry.
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.