I have recently bought a new motorhome which has a built in Uconnect 5" radio Nav. Unfortunately, this sat nav does not allow me to enter the dimensions of my motorhome and calculate a route appropriate to the size and weight of the motorhome. The system thinks I'm driving a car and could therefore send me down some narrow and unsuitable roads. Does anybody know whether I can buy software to upgrade it so it is actually fit for purpose in the motorhome? I have previousy used a stand alone TomTom Camper Go 1005 Model 4CR52, which was perfect for the motorhome, but it has just bitten the dust and doesn't work anymore. Any help would be appreciated.