usb device unreadable

Hello, I need some help with my radio. I bought my car a year ago and the radio didn’t work so Mercedes replaced the antenna. It’s a 2019 GLC. I now have exactly the same problem 13 months later. Mercedes will fix it FOC if it’s the same fault but otherwise I have to pay £180 for them to...

Hi all, this is my first post. I’ve recently purchased a 2013 C200 AMG, I’m absolutely in love with it but when I attempt to connect my iPhone SE via USB cable it reads ‘usb device is unreadble’ On the screen. Is there something I’m doing incorrectly? Are there multiple usb connection points...