First day of trip to Port Douglas (if we get that far) and my centre screen failed to reboot when I did a reboot for some music that wasn't loading. Tried many times with the reset. Walked away to let the car shutdown and then returned, still no response. Also the binnacle speed read out chucked a bit of a wobbly. All was working as normal, cruise control, autopilot, etc., however speed reading was way out. On 110 km/hr freeway following fast flowing traffic, it was only reading 75 km/hr and cruise highest setting I could get was 90 km/hr. Weird. The Nav on the little side screen was greyed out but was told that doesn't show unless a destination is selected (didn't know that). Called Richmond Service Centre will have to wait until Tuesday for them to return to work. Was assured that a replacement centre screen was in stock should their initial fault finding prove unfruitful. So after travelling 1.5 hrs back to Melbourne, at least 4 days in the big smoke now. Just so thankful this didn't happen in far North Queensland.