I just noticed when pressed lock on the FOB that the light's didn't flash to indicate the system was armed. The doors DID lock.

They also don't flash to indicate the system was disarmed when using the FOB but the interior lights come on and the door unlocks.

Is this a feature that can be turned on and off?

1.) Make sure your trunk is securely closed.

2.) It sometimes doesn't flash for me, I try it later and it works.. So, it's not 100% consistent in my view.

Good luck.

they wont flash if either one of the doors or the trunk lid is not closed properly. open everything and shut it again then try it.

That's it! :D

I was showing off the car today to some people that had sropped by my workplace and while extolling the virtues of the practicality of the rear doors/seats and the size of the trunk (with visual references), I apparently didn't properly close the trunk!

The alarm flashers work great now!