After a few years of almost daily use, the battery inside the key fob remote control for the keyless entry system of a first generation (2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 & 2017) VW Tiguan 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.