I would check it for a draw if I have a volt meter roll down a window and unhook the net batery connect the volt meter in between the ground and battery put it on 10 amp and dont open any doors and let it set and watch the numbers it should be like .20 at the highest if it is higher then that start pulling fuses till u find the circuit that has the draw and the battery drain will be fixed once u find the draw and the abs like said above is prob a hub if it goes off when turning and slowing down eBay sells em for like 30 bucks service battery is prob because of the switch installed for the battery cut off and theft is prob do to u always turning off the battery