A vehicle having an endgate counter balance for use with an endgate of the vehicle, and a method of operating, is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. Smoothed versions of the estimated attributes are calculated in accordance with a predetermined set of criteria are calculated. The second suction areas are also segmented to form second chambers. A display is then used to select one conflict resolution mechanism. The resonance frequency is controlled or influenced by the detuner, so that it does not coincide with frequencies occurring in the drive chain during operation of the wind turbine, so as to thereby reduce undesired loads in the drive chain andor tonality, i.