[JamesI3]

Hello all, today for the first time my 2013 i3 REx made a loud buzzing and vibrating noise from near the back axle when charging on my domestic cable. Has anyone else had this in hot weather? It wasn't a "good" noise.. I have a short video clip but can't upload it. Please DM me if you want it.

 

[richtrash]

It's most likely the aircon pump, the batteries are cooled by the aircon system, wouldn't have thought the batteries would get that hot charging at home.

 

[Jack]

Sounds like the coolant compressor - and would be totally normal.