The VP 10 faults are feedback faults from the motor encoder and the CP 18 faults are arm. current unbalanced faults. I would check to see if a corner of you Brake shoe is dragging the Pulley and slowly heating it up until you are not going at contract speed, thereby causing the 10 or 18 faults. these have nothing to do with your car call problem. your car call problem won't log a fault since you are not moving.