Car brakes stuck - causes and solutions

Excessive brake pad wear

The first thing to mention is that the brake pads wear out beyond the allowable limit, leading to the brake disc being worn out, making it thinner than the standard thickness allowed. This error is often due to the user being lazy to check and replace.

When the brake pads are too worn, the thin brake disc will cause the brake piston to be pushed beyond its limit, making it difficult to retract, leading to the phenomenon of locking on the drum or brake disc, creating brake locking.

If the car has this problem, you need to remove the wheel, remove the brake assembly, use a screwdriver to push the piston back to its original position, then bring it to a repair center.

Brake master cylinder is rusted

The problem with the brake master cylinder comes from the rubber gasket being torn or punctured. During operation, the brake master cylinder will rust and corrode. When braking, the brake piston will exert a large force on the brake master cylinder, however, because of the rust, the brake master cylinder cannot return to its original position, leading to a locked brake.

The way to fix this problem is to remove the clutch and clean it, apply grease to lubricate it. At the same time, check the brake piston as well as the brake pads and brake discs. If the clutch and rubber gasket are damaged, these parts need to be replaced immediately.

Deformed brake disc

External impact is also a common cause of brake lockup. If the vehicle is hit many times, the brake disc will be deformed, rotate unevenly, and shake... at this time, the brake pads will be tightly pressed, causing the brake to lock. You need to take the vehicle for inspection and repair to avoid danger.

Small brake pedal

Inexperienced repair also makes the vehicle susceptible to brake lockup if the repairman adjusts the brake pedal amplitude too small, when using the brake pads continuously press against the brake drum or disc.causing brake lock.

The best way is to choose a reputable large garage to thoroughly handle this problem, because if left for a long time, it will cause the brake pads and discs to wear out.

Brake pads expand due to water ingress

During car washing or driving in the rain, water can get into the brake system, causing the brake pads to expand, the brake pedal to become small, so when braking, the brakes will feel locked.

To overcome this situation, after washing the car or crossing a puddle, you need to lightly apply the brake to dry the brake pads, preventing water from entering the engine compartment. If you stop the car immediately after washing the car or crossing a flooded road, you should not pull the handbrake immediately.

The best way to handle this situation is to shift into reverse for manual transmission vehicles (or P for automatic transmission vehicles) and then back to drive, until the brake releases automatically.