Prior to 2.1, my fob used to start flashing when I got within 8 metres of the car - slowly at first, then more flashes as you got closer. I assume because it got into range of the more distant door transceivers.
Since 2.1, I think sensitivity has been reduced, and I only see flashing start around 3-4 metres away. Now, I can't get the LED to flash from inside the house (or start the headlight animation).
The car still only actually opens when the fob is very close to the door in use, mind. Less than a metre.