Daily restarts at the same time

Every day at 5:19 am, my Arris TG1682G restarts itself. 

I have attempted tech support, where they just check for outages. 

I have downloaded the WiFi app, searched and found no help there, no settings that control such an event. 

I have logged into the modem's interface and looked for any type of settings to change the time it resets or to disable this feature completely.