Why does the brake suddenly become hard and difficult to press?
1 Answers
The sudden hardening of the brake and difficulty in pressing it down is related to pressing the brake before turning off the engine. Below are the reasons and solutions for the sudden hardening of the brake: 1. Pressing the brake before turning off the engine: The car's braking system works at its maximum efficiency when the engine is running, and the brake booster is the key component that enables vehicle braking. The force applied to the pedal is amplified by it. When the engine is off, the brake booster also fails, and typically, pressing the brake pedal three times will deplete its remaining vacuum force. Solution: First, restart the engine, then try pressing the brake pedal firmly to restart. Once the engine is running, the brake booster can resume operation, and the brake pedal will naturally return to normal. 2. Leakage or malfunction of the car's brake booster: The vacuum tube of the brake booster may be leaking or blocked. Solution: If this situation is noticed before driving, it is best not to continue driving and take the car directly to a repair shop for inspection. If it occurs while driving, do not panic. The first thing to do is to slow down and stop. You can try pressing the pedal multiple times to see if braking can be restored. Applying more force usually allows the braking force to still function.