Well, I'm no electronics expert but I did manage to struggle through all 320 some odd pages of the manual and I do recall there being a specific part about other electronic devices interfering with SmartKey. Now, I would tend to discount this as one of the omni-present warnings one tends to find in such manuals except, just last night I noticed a problem with my SmartKey. I usually keep it in the same pocket of my briefcase and never take it out. But last the car didn't seem to recognize it.

Today, it's fine.

So what might have been the problem?

The only thing I can guess is that it happened to be, for the first time since I got the car, stuffed into the same pocket as the rest of my keys, on which hangs a transmitter for my remote start/alarm, for my wife's Jeep Liberty.

I don't know if they transmit at the same frequency but I do know that the key fob for the remote start/alarm sends updates (about every ten seconds) to the vehicle to check its' status. It's a two-way alarm with a display screen.

Given that, admittedly singular and anecdotal incident, and the text of the manual, I might infer that SmartKey is sensitive to interference.

I'd love to hear from someone more technically inclined.