carfobbattery

Subaru Legacy key fob battery

23 of the 30 model years listed for the Subaru Legacy 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.

  1. 1996-1998Remote (separate)

    Not confirmed yet

  2. 1999Remote (separate)

    CR2032

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

    Manual text: “Type CR2032 or equivalent”

    Find CR2032 on Amazon
  3. 2000Remote (separate)

    CR2032

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

    Manual text: “Type CR2032 or equivalent”

    Find CR2032 on Amazon
  4. 2001-2002Remote (separate)

    Not confirmed yet

  5. 2003Remote (separate)

    CR2032

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

    Manual text: “Type CR2032 or equivalent”

    Find CR2032 on Amazon
  6. 2004Remote (separate)

    CR2032

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

    Manual text: “Type CR2032 or equivalent”

    Find CR2032 on Amazon
  7. 2005-2007Remote (separate)

    CR2025

    FCC ID NHVWB1U711

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

    Find CR2025 on Amazon
  8. 2008Key-head remote

    CR1620

    FCC ID CWTWBU745 / CWTWBU766

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

    Find CR1620 on Amazon
  9. 2009Key-head remote

    CR1620

    Owner's manual: manualsdir.com (checked Nov 2, 2026)

    Manual text: “Replace the old battery with a new battery (Type CR1620 or equivalent).”

    Find CR1620 on Amazon
  10. 2010Key-head remote

    CR1620

    Owner's manual: manualowl.com and manua.ls (checked Nov 2, 2026)

    Manual text: “transmitter in key head ... Type CR1620 or equivalent”

    Find CR1620 on Amazon
  11. 2011Unknown

    Not confirmed yet

  12. 2012Key-head remote

    CR1620

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

    Find CR1620 on Amazon
  13. 2013Key-head remote

    CR1620

    FCC ID CWTWB1U811

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

    Find CR1620 on Amazon
  14. 2013Smart key

    Not confirmed yet

  15. 2014Key-head remote

    CR1620

    FCC ID CWTWB1U811

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

    Find CR1620 on Amazon
  16. 2014Smart key

    Not confirmed yet

  17. 2015-2017Key-head remote

    CR1620

    FCC ID CWTWB1U811

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

    Find CR1620 on Amazon
  18. 2015-2017Smart key

    CR2032

    FCC ID HYQ14AHC

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

    Find CR2032 on Amazon
  19. 2018Key-head remote

    CR1620

    FCC ID CWTB1G077

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

    Find CR1620 on Amazon
  20. 2018-2020Smart key

    Not confirmed yet

  21. 2019Key-head remote

    CR1620

    FCC ID CWTB1G077

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

    Find CR1620 on Amazon
  22. 2020Key-head remote

    CR1620

    FCC ID CWTB1G077

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

    Find CR1620 on Amazon
  23. 2021Key-head remote

    CR1620

    FCC ID CWTB1G077

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

    Manual text: “Button battery CR1620 or equivalent”

    Find CR1620 on Amazon
  24. 2021Smart key (access key fob)

    CR2032

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

    Manual text: “Button battery CR2032 or equivalent”

    Find CR2032 on Amazon
  25. 2022Key-head remote

    CR1620

    FCC ID CWTB1G077

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

    Find CR1620 on Amazon
  26. 2022Smart key

    CR2032

    FCC ID HYQ14AHK

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

    Find CR2032 on Amazon
  27. 2023Key-head remote

    CR1620

    FCC ID CWTB1G077

    Owner's manual: subarupartsdeal.com and manua.ls (checked Nov 2, 2026)

    Manual text: “transmitter: Button battery CR1620 or equivalent”

    Find CR1620 on Amazon
  28. 2023Smart key

    CR2032

    FCC ID HYQ14AHK

    Owner's manual: uhs-hardware.com and manua.ls (checked Nov 2, 2026)

    Manual text: “Access Key Fob: Button battery CR2032 or equivalent”

    Find CR2032 on Amazon
  29. 2024Key-head remote

    CR2025

    FCC ID CWTB1G496

    Owner's manual: uhs-hardware.com and manua.ls (checked Nov 2, 2026)

    Manual text: “Replacing Battery of Transmitter: Button battery CR2025 or equivalent”

    Find CR2025 on Amazon
  30. 2024Smart key

    CR2032

    FCC ID HYQ14AKB

    Owner's manual: uhs-hardware.com and manua.ls (checked Nov 2, 2026)

    Manual text: “Replacing Battery of Access Key Fob: Button battery CR2032”

    Find CR2032 on Amazon
  31. 2025Unknown

    Not confirmed yet

Changing the battery

Separate remote fob

  1. The remote is a small standalone unit. You will not need to touch the ignition key at all.
  2. Look for a screw on the back or a notch on the edge. Remove the screw if present, then twist a coin in the notch to split the case.
  3. Replace the cell, keeping the + side where it was, and check the small metal tab still touches it.
  4. Close the fob and test it. If it does not work, open it again and check the cell is seated flat.

A CR2025 is 20 mm across and 2.5 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.

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. Here the key blade and remote are one piece. You open the plastic head, not the blade.
  2. 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.
  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. Press the head together until it clicks and test the buttons. The transponder chip that lets the car start is separate from the battery, so starting should not change.

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.

A CR2025 is 20 mm across and 2.5 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. 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.

Subaru access keys usually hide an emergency key; with it out, the cover opens at the slot.

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.

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

Other Subaru models