2006 S40 -- Opening windows from key remote control

In the S40 user manual, it states

"Press the Unlock button on the remote once to unlock the driver's door. The turn signals will flash twice to confirm unlocking.

After a short pause, press the Unlock button a second time within 10 seconds to unlock the other doors and the trunk. A long press (at least two seconds) opens all side windows. "

I press and hold the button, and the windows don't go down. Is this a typo in the manual, am I doing something incorrect, or maybe the car hasn't been "programmed" correctly? Any ideas are appreciated...Thanks!