[deutsch]

hi all,


i have a 2018 mercedes c-class, we have replaced the head unit (NTG5) with a used unit as the original was faulty, anti theft pin code has been accepted and radio is now working.

the problem we have now is that the navigation is not working, the maps ect load up and then go off after a few seconds, i'm guessing that this is because the navigation is not activated for the car it is now in, when the map goes off i'm left with the following message :-

Please insert map media
(DVD/memory card/USB stick)
to activate navigation.

i downloaded the latest map onto a usb but for some reason nothing happens when i put it into the port, same happens when i try with sd card.

i thought i would be able to load the latest map onto the head unit then buy an activation code for that map.

i have never replaced a mercedes head unit before so i dont know what the process is to sort this out.


hopefully someone can help me with simple problem.

thanks in advance

[atomantmk]

Your HU is NTG5.5 or NTG5?