Trying to up load a tune mod and out of nowwhere the the tune device is now not getting power/turning on when I plug it into the obd port in the car.
I have already loaded 2 tunes and now am trying to load a new tune from RMW and the device will not turn on when plugged into the port.
It works fine when plugged into my laptop but nothing when plugged into the car.
Any reason why the obd port would stop working all of a sudden???
One it worked the next day nothing.

Help please!

 

OK figured it out from other posts on here. It was fuse #F3, heated mirrors.