Nice video, I’ve tried to find videos on the auxiliary battery replacement but I can’t seem to find one on the this style of e300. Do you know where the auxiliary battery is located in the car so I can replace it?
I have the same issue on my 2017 E300. My car guy says it doesn’t have an auxiliary battery and instead needs a voltage converter replacement. Haven’t solved it yet, were you able to figure it out?
I have that same issue I don't even know where the auxiliary battery is located . Am trying to get the battery and fix it myself but when I tried to look for a video on RU-vid to know how I can change it myself I can't find a video for help
