Air-conditioning on 2004 Toyota Prius

When I turn on my a/c it says check air-condition connection on display. Now there is NO cold air at all.

Asked by for the 2004 Toyota Prius
my display said the same for several days. Took it to the dealer. Now the entire display is dead. Dealer says it will cost $4800 to replace computer.
What? $4800 for a computer? Sounds like you went to a "stealership". Honestly, find a different dealer. Did they give you a written estimate?
1 more answer
Possible leak, or something else. Get it checked by a reputable dealer.