MC7304 Windows 10 Hibernation

I’m using the MC7304 on my carPC project. When the ignition is switched off the PC (running Windows 10) goes into hibernation mode and power supply cuts all power channels (it also cuts 5v+).
When I resume PC from hibernation MC7304 is visible in device manager and respond on the COM port, but Windows cannot reestablish network connection (message: insert a valid APN) and GPS gets no data.
If I send AT!GRESET to the COM port, modem starts to work again.
Anyone have the same issue? Maybe MC7304 needs to have a +5V in hibernation state to stay in standby mode?


Did you tape pin #20 because this tape is “hardware control” for power.