Might have something to do with your rooted phone or you hit the cancel button when the disconnect/reconnect message popped up. I always leave the app in the background and even if I forget to take the phone out of my pocket I hear the phone connect after the car starts. When I leave the car a few seconds after I shut it off I get the disconnect sound. As long as you do not cancel the reconnect screen it will keep looking to re-establish the connection but if you cancel the reconnection alert that pops up it will not re-connect because you are basically telling it not too once you cancel that alert. If you just back out of the app it will stay in that mode and re-connect automatically.
If you use the External LED you also will know when you are connected and the system is on and defending you.
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