Prius (2004-09) :: Parking / Tail Lights Not Working

Someone told my wife yesterday that her parking lights/tail lights weren't working in her 2004 Prius. When you turn the switch on the stalk one click, only the license plate light comes on. No parking/tail lights come on in the back, and the little lights above the headlights don't come on. Turn the switch another click, and the headlights come on. The brake lights work when you hit the brakes. I checked the fuses: the owner's manual doesn't really match what is in the car, so I checked a lot, and the ones I checked were all fine.

I used up all my diagnosing time deciphering the owner's manual and figuring out the fuses, so I didn't check the bulbs themselves yet (and now it's late, dark, and cold) but it seems really unlikely all 4 of these lights are out at once. Someone else in the forum had a problem where their parking lights only came on when their high beams were on, so I tried that, but that didn't make mine work. There's no history of mysterious electrical problems or collisions. I am able to do some DIY maintenance, and replaced the MFD twice, but have a healthy respect for electricity and don't have any tools beyond a voltage meter.