My car has been running fine, even this morning. Now when I went out to it the "car" warning light is flashing. I looked in the manual and it says it is the battery. What things could be wrong and how much should they cost?
Warning light for Battery on 2005 Toyota Prius
Batteries unfortunately have a limited life -- fortunately the Prius has an 8 year /80,000 mile warranty on the battery. So you should just call up the dealer and hae them fix it.