I also have a 2007 XC70 with the built in RTI and have just done a european trip also using a tomtom ! Seems madness to have an installed unit that doesnt do post codes, doesnt do 3d view and plotted some odd routes that luckily the tomtom got right. Got the classic nightmare of two satnavs pratically arguing with each other :-)
I do note that the XC90 sat nav disc set part is 31310193 and for the XC70 for the same year is 31310191 - The XC90 data sheet appears much more feature rich than the XC70 version for the same year. So there are differences in the software on the discs for the two vehicles.
I to would either like my RTI to do the job that a £200 tomtom unit can do (including advanced lane guidance as that was soooooo useful) or run tomtom?
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