In my 2G 2004 model, anyway.

Is this common knowledge that I just stumbled upon ?
Anybody know other electrical devices beside lights that also work ?

R2-E2, 2G Prius.
Highway/City/Husband/Wife MPG: 56.5, as of 12/2005, 26K miles

Jac Nasser, Ford President: "We are planning to launch a hybrid version of
this car [P2000] within this year [1998]. We will also make FCEV available in
2004."

They don't actually "work" when the car is off. Rather, they are enabled for 20 seconds or so after you turn off the car. Once you open a door, however, the circuit is broken and the windows are disabled.

I think lights always work in cars, on or off.

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I think I read in the Owners' Manual for my '05 that it lasts 45 seconds, except when opening a door as Jason said. This feature is a holdover for me from my previous car, so I discovered it rather quickly. Kinda cool huh?

Rick