Jeep Grand Cherokee L key fob battery
2 of the 6 model years listed for the Jeep Grand Cherokee L have a proven battery. The most common answer is CR2450. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2021Smart key
Not confirmed yet
- 2022Smart key
CR2450
FCC ID M3NWXF0B1Two sites agree: uhs-hardware.com and energizer.com (checked Nov 1, 2026)
Find CR2450 on Amazon - 2023Smart key
CR2450
FCC ID M3NWXF0B1Two sites agree: uhs-hardware.com and energizer.com (checked Nov 2, 2026)
Find CR2450 on Amazon - 2024Smart key
Not confirmed yet
- 2025-2026Smart key
Not confirmed yet
Changing the battery
Smart key (push-button start)
- Start by freeing the hidden metal key: there is a latch or slide on the case, and the blade comes out once it moves.
- 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.
- Close the case until it clicks all the way round, put the metal key back, then try the buttons and a push-button start.
A CR2450 is 24.5 mm across and 5.0 mm thick, much fatter than a CR2032. A thinner cell will rattle and lose contact, so buy the exact size.
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.