To judge whether the bearing of the vehicle is damaged, the following two methods can be used:

●Place the vehicle on the lift, rotate the wheels vigorously to see if the wheels are stuck, and evaluate whether the drag torque of the wheels is normal. If the steel ball is not well lubricated or out of round, it will cause jamming or increase the drag moment.

●Pay attention to whether there are abnormal noises in the direction of the wheels during normal driving of the vehicle. If the steel ball is not well lubricated, the first problem that occurs is abnormal noise. If there is no abnormal noise, there is generally no problem.

In addition, since most of the signal sources (magnetic poles or circles) of the current wheel speed sensors are integrated on the bearing, if the wheel speed signal has a problem, the instrument panel will report a fault code and an ABS fault light point as shown in the figure below bright.

Therefore, if the ABS fault light is always on, it is also possible that the magnetic pole of the bearing has been damaged.