l have a '06 Suzuki XL7 and recently l noticed that the little green light on the button/knob for turning on/off the AC is blinking periodically. l do not know what it is button is suspecting that it is telling me that it is low on freon. please help. thankyou

Blinking a/c light simply means something with the a/c electronics is not operating correctly. If under 36,000 miles see any Suzuki dealer for warranty repair, otherwise if the a/c continues to operate normally then ignore it.
We usually see what is called door actuators go out of calibration with no adverse affect other than the blinking light.

Mine is doing the same thing on my 05. It is normal and it does function as it suppose to.