How to Replace the battery for 2010 Subaru Outback Key fob



Replace the battery for the key fobs on 2010 Subaru Outback Wagons.


This solution should be applicable for 2008-2010 Subaru Outback wagons.

Tools and Parts


Unlike some other cars, Subaru key fobs DO NOT need to be re-programmed after changing out the battery so it’s just a simply matter of disassembling the case and swapping out the battery.

  1. Keyfob case is held in place by a single Phillips screw. Using #1 Phillips screwdriver, remove it;
  2. Using a pry tool (or a sharp utility knife), gently insert into the slot and twist to separate the case. Please note that there is a small hinge by the rear ring so you will have to lift up at an angle from the key side;
  3. Using a pry tool, carefully lift each plastic hold-down tabs one at a time and rotate the casing; it’s a bit tricky to open all four tabs at the same time so take your time;
  4. Once all tabs are released, lift the casing from the controller board;
  5. Pop off the CR1620 battery and replace it with a new one;
  6. Reverse the installation process
  7. allthumbsdiy-auto-subaru-key-fob-battery-replace-k-fl


CR1620 generally lasts around 3-5 years so you should not have to worry about it for some time.

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Good luck with your repair and let me know how it turns out!


7 thoughts on “How to Replace the battery for 2010 Subaru Outback Key fob”

  1. @ Peter-

    The “smooth” side is generally the positive side; if you look at the pictures, I showed you the exact position good luck

  2. Unfortunatey my 2010 model has a screwed down casing on the inner controller board. Some very small philips screws. Thanks for the post.

  3. @ Hi Jason-

    Thanks for letting me know. Were you able to replace the battery?

  4. Thanks for the guide!
    The screw from step #1 is old and partially stripped – do you know the size and/or part number for a replacement?

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