I then started to notice that when the temperature was in the 60's or lower outside (early morning or night driving) the light would come on and stay on more often and not just when turning. Now that the temperatures have gotten colder the light stays on the majority of the time I'm driving. The front disk brakes were replaced last year and the rear drum breaks have been on the car since I bought it in 2007. The brakes don't squeak at all. I would really appreciate any help anyone can give me, I'm at a loss of what to do.