Last week this started happening to my AVIC4200-nex with datalink maestro installed. After checking all wire connections and making sure the unit was getting power I could not find anything wrong. Did master resets on radio and maestro unit, and even re flashed the maestro.
On the radio settings, I was checking in the car features maestro setting and came across accessories on during crank and that was not turned on. Changed it to on and the radio comes on every time when I start my car using the push button.
