Mitsubishi Eclipse Cross key fob battery
6 of the 9 model years listed for the Mitsubishi Eclipse Cross have a proven battery. The most common answer is CR1620. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2018-2020Key-head remote
CR1620
FCC ID OUCJ166NTwo sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR1620 on Amazon - 2018-2020Smart key
CR2032
FCC ID OUCGHR-M013Two sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2021Key-head remote
CR1620
FCC ID OUCJ166NTwo sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR1620 on Amazon - 2021Smart key
Not confirmed yet
- 2022Key-head remote
CR1620
FCC ID OUCJ166NTwo sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 1, 2026)
Find CR1620 on Amazon - 2022Smart key
CR2032
FCC ID OUCGHR-M013Two sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 2, 2026)
Find CR2032 on Amazon - 2023Smart key
CR2032
FCC ID OUCGHR-M013Two sites agree: uhs-hardware.com and bestkeysupply.com (checked Nov 2, 2026)
Find CR2032 on Amazon - 2024Smart key
Not confirmed yet
- 2025Smart key
Not confirmed yet
- 2026Unknown
Not confirmed yet
Changing the battery
Key with remote in the head
- Here the key blade and remote are one piece. You open the plastic head, not the blade.
- Find the seam around the head. Twist a coin or small flat screwdriver in the notch at the blade end or side until the halves part.
- Replace the cell with the same face showing, and make sure the rubber keypad sits flat before closing.
- Snap it closed and press each button. The car still starts with a dead remote battery on most of these keys, because the start chip needs no battery.
A CR1620 is 16 mm across and 2.0 mm thick. It is easy to confuse with the 20 mm CR20xx sizes, which will not fit.
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.
- 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.
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.