What Is The Auxiliary Battery In Mercedes E350. Remove the housing that covers the auxiliary battery. Use a 10mm wrench to loosen the ground line bolt and remove it from the battery.
Here are the steps needed to replace an old Mercedes-Benz E 350 auxiliary battery with a new auxiliary battery. Prices may vary depending on your location. Up to 20 cash back Hello and welcome to Just Answer the 2nd battery in these is used at a back up so that during cranking and cold starts as some of the modules around the car dont function well if the battery voltage drops below 12V.
Anyway after dome poking around it seems the AUX battery is either in the trunk or lower drivers side.
Its not uncommon to have to replace the aux battery in isolation as its not exercised like the main battery. Remove the positive ground line from the battery. The average cost for a Mercedes-Benz auxiliary battery replacement is between 200-300 USD. What is the auxiliary battery on a Mercedes.
