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Replacement 1620 Battery - CR1620 - https://amzn.to/2VaqgsT
I'm going to show you how to replace the CR1620 battery in your Subaru Legacy / Outback / Forester key fob. Once you open up the battery case, the inner mechanism is a little hard to break into. You will want to double check what battery your case say. Once you get that open, you can replace your battery and your fob will be back to working as intended.
This specific remote came off a 2012 / 2013 Subaru Outback.
2011-2014 Subaru Legacy
2011-2014 Subaru Outback
For FCC ID: CWTWB1U811
For IC/Other: 4D-60 Chip