If the key fob remote control for the keyless entry system of your fifth generation (2010, 2011, 2012, 2013, 2014, 2015 & 2016) Toyota 4Runner SUV hasn’t been working as well recently or not at all, you probably need to change the battery. Check out my DIY instructions for the procedure (with the replacement part number) by clicking on the text link or thumbnail image below.