Error messages - 2014 W205 C220
I’ve recently started having a message appear on my dash whenever I unlock the car or turn it off. It says “Start engine, see owners manual”
I’ve also recently had issues with my Sat Nav in that the screen displays “no memory card contain software navigation inserted” this only seems to appear when I try and plug something into either of the USB ports.
This has lead me to think that both issues could be related to the auxiliary battery?
Are these issues anyone’s come across before?


