After a few years of daily use, the battery in the smart or “intelligent” key fob remote control for the keyless entry and push button start systems of a fourth generation (2013, 2014, 2015, 2016, 2017 and possibly also the revised 2018 model year) Toyota Avalon can become weak or stop working entirely. Check out my DIY instructions for the procedure (with the compatible replacement part number) by clicking on the text link or thumbnail image below.
Toyota Avalon Key Fob Battery Replacement Guide
