Does anyone know if (manufacture) car alarm on GX 470 is sensitive to weather or humidity. Arrived in Florida (from Minnesota) and car alarm starts in the middle of night (more than a few times). There is no indication of attempted break-in of Lexus or other cars in condo parking area and no car is parked next to this. Not a problem until this trip. Could condo wireless internet signals interfere with alarm? Is there any way to inactivate car alarm and have the car locked? If not, is there a way to disable the alarm?