Mercedes E350 W212 auxiliary battery location and malfunction DIY fix! Step by step replacement!

In this video Mike Icee will replace the auxiliary battery malfunction on a Mercedes W212 E350 e-class. The battery goes for $60 at the dealer. The auxiliary battery location is in the dash on the drivers side. You'll see all the steps (step by step) and DIY tools needed. This aux battery was used in most 2010, 2011, and 2012 E350 cars. Always check with a Mercedes Dealer for proper parts and repair methods. The auxiliary battery replacements costs $250-400 at the dealership.