Do all your adjustments, that is: steering, seat position, mirrors, radio setting, INCLUDING your ac temp and fan speed settings. Then when everything is all set, press the "memory" button, followed by any one of the three "numbered" buttons. This will store all the settings in memory to whichever "numbered button" you selected.
The next time you use the key to disarm the car, it might reset all settings to the memory programmed on the key. OR it might NOT. If it does reset everything, just press the memory button you have set and you got your personalized settings back.
And again, the next time the key resets the memory, repeat the process. From my experience, after a few times, the memory programmed on the key should be over-ridden by your own memory settings.
Good Luck, and let me know if it works for you.