After a few years of daily use, the battery inside the smart or “intelligent” key fob remote control for the Keyless Enter-N-Go system of a 7th generation (2011, 2012, 2013 & 2014) Dodge Charger can become weak or stop working entirely. To view my DIY tutorial for changing the key fob battery (including the replacement part number) click on the text link or thumbnail picture below.