What's the problem when the brake pedal goes all the way to the floor with one step?
2 Answers
There are mainly three reasons that can cause the brake to become soft: Air in the brake fluid reservoir: If the brake fluid has just been replaced, it is very likely that the mechanic did not completely bleed the air from the brake lines. Air in the lines can make the vehicle's brakes weak and ineffective. Severe brake pad wear: When brake pads wear out, their overall thickness becomes thinner, so the driver needs to press the brake pedal deeper to achieve the original braking effect. Insufficient brake fluid: You can check whether the brake fluid level in the reservoir is between the MAX and MIN marks. If the brake fluid is below the MIN mark, it indicates insufficient brake fluid.
I understand the issue of the brake pedal going straight to the floor, just like what my car experienced. Brake fluid leakage is the most likely cause, possibly due to loose or ruptured pipe connections, leading to insufficient hydraulic pressure. Additionally, a faulty brake master cylinder can also cause a lack of resistance, just like a pump failing to draw fluid. Air entering the system makes the brakes feel spongy and requires bleeding. Insufficient or contaminated/aged brake fluid is also a common issue, so regular checks of fluid level and color are crucial. Remember, brake failure is extremely dangerous—stop immediately if it occurs and never continue driving. I recommend heading straight to a professional repair shop to check for leaks or replace seals/fluid—don’t risk cutting corners to save money. Prevention is key: inspect the braking system and fluid level every six months to avoid trouble.
