carfobbattery

Ram ProMaster key fob battery

11 of the 12 model years listed for the Ram ProMaster 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.

  1. 2014Flip key

    CR2032

    Owner's manual: manualslib.com (checked Nov 1, 2026)

    Manual text: “The recommended replacement battery is CR2032.”

    Find CR2032 on Amazon
  2. 2015-2019Flip key

    CR2032

    FCC ID RX2TRF198

    Two sites agree: uhs-hardware.com and carandtruckremotes.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  3. 2020Flip key

    CR2032

    FCC ID RX2TRF198

    Two sites agree: uhs-hardware.com and energizer.com (checked Nov 2, 2026)

    Find CR2032 on Amazon
  4. 2021Flip key

    Not confirmed yet

  5. 2022-2023Smart key

    CR2032

    FCC ID M3N-40821302

    Two sites agree: americankeysupply.com and royalkeysupply.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  6. 2024-2025Smart key

    CR2032

    FCC ID M3N-40821302

    Two sites agree: bestkeysupply.com and royalkeysupply.com (checked Nov 1, 2026)

    Find CR2032 on Amazon

Changing the battery

Flip key

  1. Swing the key blade open first. On most flip keys the cell lives in the body behind the hinge.
  2. Find the seam or small slot on the body (often at the end away from the blade) and twist a coin or small flat screwdriver in it until the cover lifts.
  3. Lift the cell out with a plastic tool and press in the new one with the + side matching.
  4. Clip the body closed, fold the blade, and test the buttons from a few steps away.

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.

Smart key (push-button start)

  1. Find the small release on the edge or back of the fob and hold it while you pull out the metal emergency key.
  2. The gap left by the metal key usually has a pry point. A slow twist with a thin flat tool (tape on the tip saves the plastic) opens the two halves.
  3. 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.
  4. 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.

Other Ram models