Auxiliary Battery Malfunction: Mercedes E Class W212 Replace

Did you get the dreaded "Auxiliary Battery Malfunction" alert in your vehicles instrument cluster screen? In this DIY how to video, we&show you how to locate your Mercedes auxiliary battery and how to replace your auxiliary battery for Mercedes Benz after you get the auxiliary battery malfunction Mercedes Benz alert. Mercedes auxiliary battery malfunction E350 (W212) Our advice here should work for most cars that have an auxilairy batter installed, and should still be a good guide for your auxiliary battery replacement. It&all a matter of knowing where your auxiliary battery is installed in your car. In the case of this 2014 Mercedes E350 (W212), we show you the Mercedes auxiliary battery location, plus we show you 2 other possible Mercedes auxiliary battery location spots. Auxiliary battery function Mercedes It doe snot matter if you have an auxiliary battery malfunction s550, or an auxiliary battery malfunction e350, it is essentially the same failure mode of your Mercedes auxiliary battery. The purpose of the auxiliary battery is to backup certain systems of your car, and in the case of the Mercedes Benz w212, and other Mercedes models with auxiliary batteries, they supply power to the ECO mode system, which allows your gas motor to shut off while your foot is on the brake during traffic lights. Your Mercedes-Benz w212 auxiliary battery also provides power for the hold function on your brakes. Auxiliary battery replacement Mercedes W212 models and more For some...