Originally Posted by Quinten
John, thanks. I read your issues regarding similar symptons. Did your symptons go away once the battery was changed? (I am assuming they did)The other similarity is my heating blower will continuously change speeds from like low to med. to med high, then to low, then back up. It just doesn't stay steady unless on defrost mode. So this might also be a sympton of the battery?
One question, and I will search, but just in case, what is IBS?
IBS = Intelligent Battery Sensor (I believe)
The blower speed may also be a result of a bad or failing battery, but that's also a symptom of a bad final stage resistor. It sounds like a battery is needed no matter what; start with that - then see if all of your issues are resolved.