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Why can't the foot brake of Geely Emgrand be pressed down?

2 Answers

LeAddyson

07/24/25 6:08am

This situation is due to the need to replace the brake fluid or a malfunction in the vacuum booster. The function of the vacuum booster: The vacuum booster utilizes the pressure difference between the vacuum generated by the vacuum pump and atmospheric pressure to multiply the braking effect, making it easier to press the brake pedal and ensuring safe and rapid braking. When the vacuum booster malfunctions, it cannot provide the boosting effect, but the hydraulic brake system can still ensure driving safety. The working principle of the vacuum booster: When the brake pedal is pressed, the control force from the pedal mechanism pushes the control valve push rod and the control valve plunger forward. After eliminating the gap between the plunger and the rubber reaction disc, it continues to push the master cylinder push rod, causing the brake fluid in the master cylinder to flow into the wheel cylinders at a certain pressure.

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DeBentley

08/11/25 1:51am

I used to experience the brake pedal being hard to press when driving a Geely Emgrand. Most of the time, it was due to an issue with the brake hydraulic system. Insufficient brake fluid or leaks can cause inadequate pressure transmission, making the pedal feel stiff. It could also be caused by rusted or seized brake calipers, or blocked wheel cylinders preventing moving parts from functioning properly. Severely worn brake pads or foreign objects stuck in them can also lock up the entire system. I’ve noticed that such failures are often related to long-term parking or humid environments, as moisture infiltration can lead to rust on components. If the brake pedal becomes immovable, never force the vehicle to continue driving—doing so can accelerate brake pad wear or even cause accidents. It’s best to pull over to a safe spot immediately. Check the brake fluid reservoir yourself; if the level is low, top it up. If no obvious issue is visible, contact a professional repair shop right away for diagnosis and repair to prevent minor problems from escalating into major safety hazards. Regularly inspecting the hydraulic system and replacing brake fluid during maintenance can effectively prevent such troubles.

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