Some errors in car brake system that drivers need to know
Below are signs that your car's brake system is having problems. You need to review it immediately to ensure the safety of your car.

Brakes are not working properly
When braking, they are forced to react smoothly and steadily. Many times, the brake pedal is held for a long time, the braking force only appears for 1 second and then disappears, the cycle repeats regularly, maybe the brake pads or brake discs are damaged. In this case, it is necessary to replace the brake discs, it is necessary to replace each pair before or after, avoid replacing only one side.
Poor braking performance
Brake performance is not as good as usual. Brake fluid is reduced due to leakage or water contamination, causing the brake pedal to not create enough oil pressure. Check and repair or replace the pipe before adding more oil or changing new oil.
There are cases where the brake wear warning system does not work, nor is there any noise coming from the wheel. So poor braking performance is another sign of worn brake pads.
Brake pedal feels heavy
To reduce the effort for the driver, when braking, brake systems have now been commonly applied to assist with vacuum. With the phenomenon of heavy braking, the cause may be a failure of the brake booster. The air leak has not created a large enough pressure difference to support the force from the pedal. The driver can still brake the vehicle but needs to use a stronger force.
Another reason may be that the oil line is clogged, the oil pressure improves but cannot be transmitted to the brake mechanism. In this case, no matter how hard you try, the brake will not be effective or the effect will be greatly reduced. To generate the greatest braking force, adjust the seat so that the back and hips rest against the seat.

Brake pedal feels light, no braking effect at all
There are two main possible causes: oil mixed with air or a damaged master cylinder. There are air bubbles in the oil, when you step on the brake, the air bubbles are easily compressed, the pressure is not large enough for the brake mechanism to work effectively. Bleed the air (bleed e) to push all the air out. In case the master cylinder is damaged, it is worse than it can be repaired so you have to replace it.
Squealing noise coming from the brake mechanism
Suppliers usually use drum brake mechanism or disc brake mechanism. Disc brakes are often used on modern cars can be only on the front wheels or all 4 wheels, older models used drum brakes because their speed is lower than new cars, moreover at that time disc brakes were not perfect.
A squealing sound that occurs regularly only when you step on the brake pedal is simply a signal that the brake pads are worn and need to be replaced. This is a safety measure provided by the manufacturer.