LX450 has auto climate control as they all do.
My Land Cruiser is not a 40th or CE so it doesn't have auto climate control.
There has been discussion before as to when the AC and defrost were tied together but I can't remember the answer. I think it might just be 96/97 but maybe includes 95.
On both my 1997 LX450 and 1997 Land Cruiser when I push the defrost button the AC light comes on. Even in automatic mode with the LX450, the AC light is on when defrost is on.