carfobbattery

Ram 1500 (DT) key fob battery

Every model year listed for the Ram 1500 (DT) has 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.

  1. 2019-2021Smart key

    CR2450

    FCC ID OHT-4882056

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

    Find CR2450 on Amazon
  2. 2022-2023Smart key

    CR2450

    FCC ID OHT-4882056

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

    Find CR2450 on Amazon
  3. 2024Smart key

    CR2450

    FCC ID OHT-4882056

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

    Find CR2450 on Amazon

Changing the battery

Smart key (push-button start)

  1. Most push-button fobs hide a metal backup key. Press or slide its catch and draw the key out first.
  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. 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.
  4. 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.

Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.

Other Ram models