Ultimate Troubleshooting Guide Fixing Auxiliary Battery Malfunctions

Mercedes Benz GLK350 auxiliary battery replacement. Easy DIY job. Don't waste your money at a dealership. If I can do it, you can do it too. The 2 batteries r isolated from each other when the car is completely shut off, so if u cant start ur car, it has something to do with the main ... The auxiliary battery is the one in the front. Normal battery life span between 14 to 18 months. Tell tale sign of battery failing: sudden dim ... If the auxiliary battery of your Mercedes-Benz is damaged, you will notice many problems such as the Dashboard showing error messages, failed instrument ... Auxiliary Battery Malfunction” message can appear on the dash of your Mercedes due to any number of reasons. And, if you ignore the message ... I wanted to understand what's causing this malfunction and how to fix it? I'm guessing this auxiliary battery is a back up battery or some sort. Fuse #32 in the driver's seat base fuse panel is the correct fuse to pull to disconnect the small auxiliary emergency battery. Here is a thread ... It is highly recommended to disconnect the battery terminal when doing anything in the car, Open the carpet and it is easily seen, remove the plastic cover and ... Most things I've read say you should change both batteries when you need to change 1, it could be your main going bad that drove the AUX to fail. In this video I answer these questions: What is the Auxiliary battery used for? Why does it fail? How to replace it?