NOT KNOWN DETAILS ABOUT GEARBOX CVT PROTON

Q. Once the car comes to a cease (in the course of the decelerate/deceleration), I'm able to hear an extremely apparent humming seem. If i change to neutral, this sounds will disappear promptly. The sound can also be apparent if the motor vehicle is downhill with motor braking.Q. Is there anyway to prevent CVT failure like honda town/jazz? Any Uniq