So my light went off the other day, did a quick YouTube search and found it was super easy to install. I’m not a DYI kinda guy and I was able to do it in 20 mins max. Wonder how much the dealer was gonna charge for this. Here’s the link if anyone’s interested...super easy


cheers

 

Good video and you have a very good attitude... for most folks if you get the Aux Battery malfunction with your VIN# call your dealer - or MB Customer Care and see if your W205 has a Open Campaign to replace/update that part..