I really don't believe you can turn this off. But I found a quick workaround for the "car honks with driver's door closed when ignition on" issue. Just shut the driver's door, but don't let it latch. On my MKZ, I really have to give a good swing to my door for it to latch. I just don't give it that much and it works fine. This will allow you to keep your climate-controlled interior as cold as you want, and the car won't honk. Plus, if you look quickly enough, your door looks (sort of) closed. Short of actually turning this "feature" off, (which seems impossible) I think that's your best bet.