OK the FAQ says:"After the player has fully powered off, you will need to turn on the car's ignition again in order to wake the player.". I should've clarified my first ? more in that after I've started the engine after the player has fully powered off it still doesn't wake up, no response either from the buttons or knob. I have to pull the player from the sled and re-insert it to get to reboot to get it to start playing, it remains dead until I do this, but this doesn't happen all the time. My player is connected to an ignition wire and it does come back to life when shut off by the ignition I can press a button or turn the knob and it turns back on as long as it hasn't gone into a fully powered off condition.