What are the reasons for the car's brake pedal being hard to press down?
1 Answers
Reasons for the car's brake pedal being hard to press down: The vacuum booster pump of the brake has malfunctioned. Normally, the force applied to the brake pedal is amplified by the vacuum booster pump. If the vacuum booster pump fails, the brake loses its power assistance, making it naturally difficult to press down. The vacuum booster pump generates vacuum and provides assistance only when the engine is running. If the engine is off, it certainly won't produce any assistance. If you find the brake pedal hard to press after turning off the engine and parking, this is a normal phenomenon. This is because you can only rely on the remaining vacuum assistance, which usually dissipates after a few presses. The assistance will be restored after restarting the car.