For the sake of diagnostic, have you tried having your kid slamming the door when you hold the key fob next to the Smart Start button? Does the key not detected warning still shows up?
Yes, I was indeed thinking either a different key fob (or although the battery is new, sometimes if purchased online they may be weak); you are reading my mind.I don't seem to be able to do it on-demand, so reproducing this might take a while. Are you thinking I should try a different key fob?
I did install a dash cam which runs down the passenger front pillar. Is it possible there is a loose connection there or under the dash on the passenger side?