How to replace the battery in a Toyota Avalon Key FOB

How to replace the CR2023 battery in a Toyota 2015 Avalon Key FOB
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Smart Proximity Key Fob Replacement Fits for Toyota RAV4 2013 2014 2015 2016 2017 2018 2019 Keyless Entry Remote Control 314.3 Mhz P/N:89904-0R080 89904-42070 FCC:HYQ14FBA