Jeep Wagoneer key fob battery
2 of the 5 model years listed for the Jeep Wagoneer 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.
- 2022Smart key
CR2450
FCC ID M3NWXF0B1Two sites agree: uhs-hardware.com and energizer.com (checked Nov 2, 2026)
Find CR2450 on Amazon - 2023Smart key
Not confirmed yet
- 2024Smart key
CR2450
FCC ID 2BAHD-KFW1Two sites agree: uhs-hardware.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR2450 on Amazon - 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.
- Before you take the old cell out, look at its face. Put the new cell in with the same side showing, and avoid touching both faces at once.
- Snap the halves back together, slide the metal key home, and press each button, then try the start button from the driver's seat.
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.
If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.