Why can't the foot brake of Geely Emgrand be pressed down?
3 Answers
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.
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.
I remember last time my Geely Emgrand's foot brake couldn't be pressed down due to an issue with the brake circuit. Loose connectors or aged cracks caused unstable current flow, and the brake light wouldn't illuminate when pressed. Later, when towed to the shop for inspection, they found the main pump relay was burnt out, coupled with spring fatigue causing jamming. Such problems are quite common, especially after several years of use, as wiring and mechanical connections are prone to vibration-induced malfunctions. It's advisable to always keep a flashlight in the car for emergency checks on the brake pedal and wiring connection points. If the foot brake suddenly fails, safety first—turn on the hazard lights and pull over slowly. Avoid stomping repeatedly to prevent damaging more components. When washing the car, avoid direct water spray on the brake area, as moisture accelerates rusting of metal parts. Regular professional inspections can save a lot of trouble, as brake issues are among the core safety hazards.
