its not a battery, but a radiator and its the low coolant level light... just add a cup of coolant to the overflow container and it will go out and stay out.. the coolant recovery tank has the sensor in it and it is very sensative and needs just a little more then the marks on the side of the container say where the full mark is located.....
no problem alot of other cars dont have this light and there is no problem with it comin on................... as long as you have coolant in the tank....
