After investigation found the door stopper fixing bolt torque results in attenuation abnormal sound turned off, the vehicle further analysis of the fault
After inspection, it was found that the torque attenuation of the fixed bolt of the door limiter caused the opening and closing noise, and further analysis of the faulty vehicle was 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 faulty vehicle