He seemed a bit at aw as he said " these cars do nt give any problems " . For now he is switching out relays , and said that if that did not work the manual says to replace the ABS ( he said it comes with the pump and all ) . I am truly concerned as I have only had this used ( 90,000 miles ) 04 Prius for 3 weeks and it was running great until " Boom " . Does any one have any idea what could be the possible cause of this problem ?

Question: What may have caused your prius to go " boom ? "
Answer: Parts might need to be replaced .He sold me a faulty Prius .None of the above choices .The parts I replaced are n't working .