Hi. On a few occasions now, when on a journey of over an hour or so, my D3 starts to play up. The screen often turns itself off, the sat nav completely stops working... and when I manage to finally get the sat nav disc out it is boiling hot. Once I turn off my car and leave the D3 to cool down for a good few hours... everything works again, although I do sometimes have to reset the system.

 

Any thoughts on why my D3 may be over heating and what I can do about this problem?

 

Thanks.