Charging System Warning - This can be either the system is not working properly. Usually signaling a problem with the alternator, bad serpentine belt, loose/corroded battery cables, faulty voltage regulator, or sometimes the battery itself, preventing it from charging properly and risking a stall vehicle. In the winter most batteries that are near aging out will drop voltage and will present signs such as this light on the dash. I have seen this in a newer KIA and it is a known DEALER bulletin where there is a parasidic draw due to a faulty sun visor fault. Some visors have a light and this light, either opened or not create a minor parasidic draw, causing the battery to be working even when the car is off. Check any Mechanical Bulletins for your Make and Model of car, these can save you some money if under warranty.