it's the out dated hardware. I contacted navteq for the issue and they said they couldn't do anything about itBrianS said:I have always been curious about the nav system. I just can not figure out why it would tell me to take a surface road for 12 miles, rather than the highway which parallels the surface road even though I have it set to a highway configuration. I find it hard to believe that Maserati continues to use this system. Does anyone actually know what causes the problem? I am assuming it's not the CD, but the nav unit itself.