A place where I write on check engine light
Again, schedule brake repair as soon as possible. Rotor surface issues may be developing if either your brake pedal or your rotor itself begins to vibrate. 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. Any grinding or growling results from metal on metal scraping; your brake pads have most likely worn down.