I don't know what the did but I can tell the switch is working but its not freezing cold just cool.If working properly it will freeze you out. Did they charge by weight?
Out yesterday in the '11, 96F, didn't check the air temp at the vent, but was set on 70 and the wife needed a sweater around the shoulders.
As stated before, check the air temp at the vent when on max. I'll check mine today.........if I remember to take the stick thermometer with me.