Help! 2008 Prius Navigation..everything in the car works except the screen..???

(Ah, the joys of buying a salvaged vehicle.) Take it to another dealer, one that is not too snooty to do the needed diagnostic and repair work.

 

Check all fuses??? Pull out the dash and make sure its plugged in....those would be my first guesses without dropping dough on the dealer.

 

yea check all the fuses. its not likely that the screen will go bad.

my 05 prius had a few blown fuses ( rebuilt salvage also )
usually if its front collision, the cooling fan fuse, and some SRS/ABS fuse.

 

Checking all fuses is a good first step, keeping in mind that there is a large relay/fuse box in plain view near the inverter in the engine compartment, and another fuse box hidden behind the instrument panel near the steering column.

If that does not bring joy, then you will have to remove the MFD and test to see if 12V is available on the wiring harness. If you are up to doing that then I suggest you download repair manual docs and wiring diagrams from techinfo.toyota.com which is a subscription website.

 

Not that I doubt your account, but I have never seen a brand new car salvaged becasue it needed a $600 (approximate) bumper. I think you need to look deeper if the car was truly a salvage, which in CA means it was totaled by the insurance company.

 

Conversely, if it is a salvage that implies that it needed more extensive repair work. If it is it would be worth having a certified Prius tech thoroughly check it out to see what else might be wrong it.

 

If the car had accident damage in the front and was declared salvage, then it is likely that at minimum the front airbags detonated. Maybe that caused some obscure damage to the wiring harness in the instrument panel, hence the MFD does not work.