Where is the dash light fuse in a 2008 Prius - 2008 Toyota Prius

Could be led must replace the whole unit.

Not to insult you, but are you sure you haven't unintentionally and without knowing you did so turned the brightness control all the way off? If you haven't, and the fuses are good, seems like a wiring issue.

switch from auto to manual lights switch on dash, check fuses. that's all I got.

On this website (link below) you find fuse box diagram and description for Toyota Prius (2008)

Toyota Prius Second Generation XW20 2008 2009 fuse box diagram Auto Genius

And fuse box diagram and description for Ford Windstar (1997)

Ford Windstar 1996 fuse box diagram USA version Auto Genius

The reset button is near the bottom of the dash by the floor.

check fuse or relay. if u turn the nob from hot to cold itll work.. damb toyota

There is a reset button below the dash that needs to be depressed.

more that likley the wires have came unpluged in behind the lighter you will have to pull the dash apart just a little to see.

The flashing key-inside-a-car means the anti-theft system is working properly. On page 84 of the 2009 Prius owners manual, the explanation indicates that a flashing key-inside-a-car is normal, and is desired. It should extinguish when the automobile is operating. It may be distracting, but it's a good thing!!

mlangner in Albuquerque, NM

Problem is resolved, 
I pulled & giggled a couple of fuses, found one fuse that had an extend fuse container was probably not quite seated right. Will notify dealer & replace several working fuses with new. rr