A couple of weeks of auto sleep throughout the day and push-button hibernate when leaving the vehicle overnight and not a single failure to resume or suspend in either mode. The M4 has behaved faultlessly, what more can I say.
I have revised and finalised the power distribution for the system with some extra notes and sections highlighted in the hope that it makes it a little easier to follow for anyone still interested. I will attempt to describe some of the functions of this system if anyone is interested in the hope it gives someone starting their first build some food for thought.
A large clear jpg image 1.5MB in size
The aux micro circuit. This is located in the main PC-PSU case.