oldun yeah simple. sorry should have written that better.
When I mean "the car resets itself", i meant that the Satnav/MM clears its memory of the route or boots you out of a call and comes back up with the normal caution and agree screen which you get on engine start up.
Its rather random too. You can go 20 miles without it doing it once then all of a sudden it would do it 5 times within a mile.
Dam thing !!
Just keep getting fobbed off by Lexus