By investigation found the door stopper fixing bolt torque results in open and close abnormal sound attenuation, further analysis of the amount of vehicle failure
After investigation, it is found that the torque attenuation of the fixed bolt of the door limiter causes the opening and closing noise, and further analysis of the faulty vehicle volume is required.
After troubleshooting, it is found that the moment attenuation of fixing bolt of door arrester causes abnormal sound of opening and closing, so it is necessary to further analyze the number of faulty vehicles