as you have a Limited, I'm assuming you have the EATC controls (Electronic Automatic Temp Controls) and not the standard 3-knob manual HVAC controls. if you have the EATC, there's an AUTOMATIC button and an OFF button. there is only one button that says A/C MAX, all the other buttons (VENT, FLOOR, PNL/FLOOR, FLOOR/DEFROST and DEFROST) will not cause the A/C to work in recirculation mode. you also have TEMP up and TEMP down buttons and a temp setting display, which tells you what the temperature selected is. if the A/C MAX button is pressed, the temp is automatically set to 60F and can not be adjusted. in any other setting the temperature can be set to anything between 60F and 90F. the A/C compressor may run in any setting except VENT and FLOOR. this is to remove humidity from the cabin. the Limited probably also has a REAR PANEL button for the rear seat controls, and there's a thumb wheel for variable fan speed adjustment. some of these controls are repeated on your steering wheel. I don't understand your confusion. the ONLY setting that will cause recirculation is A/C MAX, period. there is no A/C NORMAL button. if it's 90F outside and you set the EATC control temp to 75F the A/C will run w/out recirculation.