What Causes the Brake to Suddenly Become Hard and Unpressable While Driving?
1 Answers
The reasons why the brake suddenly becomes hard and unpressable while driving are as follows: 1. Problem with the brake booster pump: If the brake suddenly becomes hard while driving, it may be caused by a vacuum tube leak or blockage in the brake booster pump. In this case, stop the car immediately for inspection and replace it if necessary. 2. Foreign objects adhering to the brake pads and calipers: If there are foreign objects adhering to the brake and calipers, friction from these objects during braking can also create a sensation of the brake becoming hard. This situation only requires cleaning. 3. Intervention of the vehicle's ABS system: When the vehicle is braking sharply, the ABS system intervenes in the car's braking system to prevent wheel lock-up and loss of control, which can cause accidents. This results in a rebound effect on the brake pedal. This is a normal phenomenon, and lightly pressing the brake again will restore normal operation.