Oh....It could be that your brake pads are getting worn down...some cars im not too sure about our cx7s have a sensor in the brake reservoir that when the fluid gets low the light comes on and it is a indicator that you have a leak or that your pads are worn down so low that the fluid has reach a level low enough to turn on the light..get your pads checked..its easy to pop the hood and see where your fluid level is at..dont add if its low because when you change your pads they will push the pistons back in the calipers and the fluid will rise...if you add fluid the reservoir will be too full ...Get your brake system checked if your not sure how to do it..
