Jeep Grand Cherokee (WK2) key fob battery
Every model year listed for the Jeep Grand Cherokee (WK2) has 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.
- 2014-2016Smart key
CR2032
FCC ID M3N-40821302Two sites agree: uhs-hardware.com and energizer.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2018-2022Smart key
CR2032
FCC ID M3N-40821302Two sites agree: uhs-hardware.com and energizer.com (checked Nov 1, 2026)
Find CR2032 on Amazon
Changing the battery
Smart key (push-button start)
- Most push-button fobs hide a metal backup key. Press or slide its catch and draw the key out first.
- 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.
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.
Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.