06 Master warning,brake warning, check engine, vsc hybrid system warning

I've read quite a bit of these threads, but this is exactly what my 06 Prius is doing. I have master warning, yellow brake warning, check engine, vsc and hybrid system warning lights on. I've got a brand new 12 volt battery in it. I disconnect the battery for five minutes and all the lights go away. I drive for an hour with no problems shut it off and then when I restart it all the same warning lights come on. It seems to run fine while all the warning lights are on. I've got a rattle noise in the engine compartment on the passengers side depending on rpm. I've got an O'reilly's auto parts in town and plan on getting any codes they can read tomorrow. I don't have much of a budget, the dealer wanted 125 just to check the codes. The fluids look good.199k miles. It just strikes me as odd that I can drive for quite a bit with no warning lights and they only come on after I stop and restart it. I'll get whatever codes they can give me tomorrow.