carfobbattery

BMW X5 key fob battery

15 of the 26 model years listed for the BMW X5 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. 2000-2006Key-head remote

    Not confirmed yet

  2. 2007-2011Key-head remote

    Not confirmed yet

  3. 2007-2013Smart key

    CR2032

    FCC ID KR55WK49147

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

    Find CR2032 on Amazon
  4. 2012Key-head remote

    Not confirmed yet

  5. 2013Key-head remote

    Not confirmed yet

  6. 2014-2016Smart key

    CR2032

    FCC ID NBGIDGNG1

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

    Find CR2032 on Amazon
  7. 2017Smart key

    CR2032

    FCC ID NBGIDGNG1

    Owner's manual: manualslib.com and uhs-hardware.com (checked Nov 1, 2026)

    Manual text: “Insert a battery of type CR 2032 with the positive side facing up.”

    Find CR2032 on Amazon
  8. 2018Smart key

    CR2032

    FCC ID NBGIDGNG1

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

    Find CR2032 on Amazon
  9. 2019Display key

    Rechargeable

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

    Manual text: “The battery of the display key is discharged ... Charge the battery”

  10. 2019Smart key

    CR2032

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

    Manual text: “Insert a type CR 2032 battery with the positive side facing up.”

    Find CR2032 on Amazon
  11. 2020-2022Smart key

    Not confirmed yet

  12. 2023Smart key

    CR2032

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

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

    Find CR2032 on Amazon
  13. 2024Smart key

    Not confirmed yet

  14. 2025Smart 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

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. 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. 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.

Card or phone key

  1. These years use a card-style key.
  2. Most NFC key cards are passive and never need a battery.

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.

Other BMW models