I have a 2017 LT. The first time I turn the car off after charging I get the triple honk. This happens every time except if I open the door before turning off the vehicle (I imagine the door chirp overrides the honk). I charge outdoor with a level 1 charger. The charger is in the trunk with the cable and an extension cable coming out of the trunk (for security). The trunk is not completely latched all the way but is latched enough to be locked. The trunk light goes off after 10min. Can the car be "remembering" the trunk is open and honking about that?