It is hard to believe I have lived with this frustration for 9 years! So here is my question: Is it possible to get full control of my heating/cooling system? Right now there is a relay (or other unknown mechanism) that based on my choice of ventilation location will sometimes turn on/off either the recirculation and/or air conditioning. Is it possible to prevent this? If so, is it easy enough for me to do myself or should I have a mechanic do it?
PS I used to change my own oil, replace bulbs, check the tire pressure occasionally, and other minor stuff.
Thanks!