Radiator service, and so much more
If you have, take your car right away to a brake repair technician to have your brake fluid level checked; an illuminated light typically indicates that the level is low. If you see a light amber colored liquid pooling underneath your car, chances are that that is leaking brake fluid. You wont miss the smell. Again, schedule brake repair as soon as possible. You may have rotor surface issues if either your brake pedal or your rotor itself starts vibrating.