1. Abnormal sound when braking
Abnormal noises during braking may be caused by thinning of the brake pads, potholes in the brake pads, foreign objects in the brake pads or rust on the brake discs. Generally, the abnormal noise will be alleviated by stepping on a few more brakes. If the brake system fails, the system will recognize it, and there will be a brake warning light on the dashboard. In this case, you need to go to a 4S shop or repair shop for repair and maintenance without delay. If there are some dangerous situations, the gain is more than the loss.
2. The brake becomes soft.
1. Water vapor has entered the brake oil pot and the water content has increased, resulting in impure oil.
2. The boiling point of brake fluid is too low. The temperature generated by friction during braking exceeds the boiling point of the liquid, and the gas will vaporize and cause air resistance, making the brake slow or even invalid.
3. The brake fluid has deteriorated. Or the pipeline is not well sealed.
4. The brake master cylinder or sub-cylinder is damaged, and there is slight oil leakage, which causes the brake to become soft.
Third, the brakes become hard
The reasons for the hardening of the brakes are mainly caused by the failure of the vacuum booster, the brakes are not assisted, and the brakes are frequently stepped on. You can check the working conditions of the vehicle brake vacuum booster pump and the master cylinder and the sub-cylinder. In this case, you can go to the 4S shop for inspection and maintenance.
Four, brake deviation
The phenomenon of braking deviation is not very common, mainly reflected in the obvious deflection of the steering wheel to one side when the brake is applied. This phenomenon may be caused by partial wear of the brake pads and a problem with the brake cylinder.
Five, rebound when stepping on the brake
Many card friends have encountered this situation. When the brake is stepped on, the brake pedal rebounds to the top of the foot. This phenomenon is mostly caused by the uneven surface of the brake disc, brake pad, and deformation of the steel ring.
Do not ignore the brake problem. If there is a problem, it must be investigated in time, and you must pay attention to safety when you go out.