carfobbattery

BMW X1 key fob battery

4 of the 13 model years listed for the BMW X1 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. 2013Smart key

    Not confirmed yet

  2. 2014-2015Smart key

    CR2032

    FCC ID KR55WK49147

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

    Find CR2032 on Amazon
  3. 2016Key-head remote

    Rechargeable

    Owner's manual: manua.ls (checked Nov 1, 2026)

    Manual text: “Each remote control contains a rechargeable battery”

  4. 2017-2022Smart key

    Not confirmed yet

  5. 2023Smart key

    CR2032

    Owner's manual: manua.ls (checked Nov 1, 2026)

    Manual text: “Insert a CR2032 3V battery with the positive side facing down.”

    Find CR2032 on Amazon
  6. 2024-2025Smart key

    Not confirmed yet

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. Look inside the empty key slot for a notch. Put the tip of the metal key or a small flat screwdriver wrapped in tape there and twist gently until the shell splits.
  3. 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.
  4. Reassemble, refit the emergency key, and check that the car sees the fob when you press start.

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.

Key with remote in the head

  1. This type has the buttons built into the key head. The cell is inside that head, between two clipped halves.
  2. Many key heads split along the side seam. Start at the small notch and pry a little at a time.
  3. Inside you may find a small circuit board in a tray. Lift the board out if the cell is underneath, swap the cell with the same side up, and refit the board.
  4. Close the head, check there is no gap, and try the buttons.

The owner's manual says this remote has a rechargeable cell. It charges while the key is in the ignition or the car is driven. There is no coin cell to buy; if it no longer holds a charge, a dealer replaces the remote.

If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.

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