I have now had 2 occasions of my USB port not working and both times it has stopped working after using CarPlay on long journeys.
I traced the problem down to the USB module 86190-11010. I swapped it out and it worked straight away.
It has just gone again after 2 months use so I will have to swap out again. Is there an inherent fault with this unit putting it under load using CarPlay??
I stripped the old unit and it has a small circuit board inside but no obvious signs of it blown.