Hello, I just purchased a 2018 leaf and brought it back (used, 20,000 miles). No issues when in the car. Lock the car from the inside, car off, message won't appear. It's when I step OUTSIDE of the car and lock the car, the message "warning: key not detected" pops up and won't go away! I don't want to leave this on all night and drain (probably a very small) portion of battery. More than anything I just want to know what's going on... I haven't heard of anyone having these issues when LEAVING the car. Any help appreciated.. running to store very late to get batteries for FOB just in case.. work early in the morning.