Question What happens if brakes become too hot? Answers They will become too smooth. They will harden. They may stop working. The air compressor will kick in to cool the brakes Explanation If brakes are overused, they may overheat and stop working. This is referred to as brake fade. Take a FREE Practice Test Now This questions appears in the following tests: West Virginia Knowledge Test Class A , Indiana Air Brakes , New Jersey Air Brakes ,