Some posts on auto ac repair
The smell will be unmistakable. 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. If your brakes start squealing when you press on the brake pedal, get your car into your favorite repair shop to determine whether brake repair is necessary. Squealing after the pedal has been released means that your brake wear indicators may be scraping against the rotors.