So... not to hijack the thread or anything, but when something like what the OP describes happens, is there any way to switch to the other driver's settings, other than shutting off the car, pressing unlock on the keyfob, and restarting?
This happens to me all the time. My wife and I each have a key, and even though she's in the passenger seat, it often recognizes her key instead of mine, and of course I don't find this out until I start the car. It's annoying to have to shut it down and dig the key out of my pocket to fix it. Why Acura chose to have the driver selection buttons only set the seat positions is beyond me. In every other car I've ever been in, the driver selection buttons change all recorded driver settings, including radio stations (assuming those are driver-specific), but no... not Acura.
Like many things Acura, I've found that they often get the concepts very right, but the details very very wrong.