usb media input

There are two usb Ports in the central console. One just charges only and the other charged and linked my phone to the display So I could used the apps through it. Unfortunately I think hand gel leaked into the one that links to the display and it not longer works. The stand alone one that...

I have copied a large number of songs onto a Kingston USB Memory Stick and plugged this into the USB socket on my car (2018 C-Class - standard audio). I can play tracks from the memory stick just fine, and they shuffle just fine. Then randomly as it switches from one track to the next it stops...