What should I do if the car makes a piercing metal sound when it ran, and the brake pads make an abnormal sound and metal friction sound?

When the vehicle is running, it will make a harsh metallic sound, and the owner should pay attention. Under normal circumstances, the vehicle will not make abnormal noises. This is likely to be the metal friction sound of the brake pads. Be sure to find a safe place to stop and turn off the engine immediately, and check whether the brake pads are worn out.

What to do with the abnormal sound of the brake pad and the metal friction sound:

1. There may be impurities such as sand and stones between the brake pad and the brake disc. You can try to step on the brake a few times to get rid of these impurities;

2. When the vehicle is parked in a humid environment for too long, the brake pads may rust. When the brake is stepped on, there will be abnormal noises and metal friction. The abnormal noise can be solved by polishing it down;

3. The brake pads are severely worn and almost worn out. At this time, the brake pads must be replaced immediately, otherwise it will affect the safety of driving.

Under normal circumstances, the brake pads need to be replaced after 40,000 to 60,000 kilometers. Because the brake pads will be polished and become very thin during driving, which affects the safety of the driving vehicle, it is necessary to replace the brake pads. Ensure the safety of car owners. If the owner's driving habits and driving environment are not very good, the brake pads will be severely worn and replaced in advance.