Jiawa

I plugged in a USB drive (with some MP3 files in it) into one of the USB ports. Both USB1 and USB2 are greyed out in the media selection. I then tried to plug my phone in through a USB cable and I can see it's charging. But both USB1 and USB2 are still greyed out. What should I do next? Thanks!

lcarros

Not sure if this will help but on my 2015 300h I think the usb ports were greyed out but the dealer set my android phone to connect. I checked and changed the phone to just phone connect only which prevents the phone from supplying music and now I have two usb sticks providing classical and rock on each.

ShakMan

Make sure your USB drive is formatted as FAT32. Then copy the mp3 files and try again

xlinx

yep, sometimes the usb disk is exFAT(for single larger file store more then 4G) not FAT32. plz let it be FAT32.

Jiawa

Thanks both. Tried a 4GB drive and it works. The one did not work was a 2GB drive.