Sorry for the delay in responding, just picked up my prius this evening. Dealership #1 did my diag = need for blower motor controller replacement Dealership #2 did the service, that dealership stated a service bulletin was the rationale for replacing the 2 ecu's, I asked again about the controller, "we're getting different DTC than before we replaced the ECU's"...all ended up that dealership #1's diag was correct, blower motor controller was replaced and all is well (in addition to the 2 ECU's). 2nd dealership was used because the dealership that I bought the car from (non-hybrid, used,....mistake, will never buy from again) agreed to pay (still had dealer warranty of 30 days) for repair from diag. dealership #1 is 35 miles away, #2 is about a mile from where I bought it. Hope this is clear, if not will try to answer further questions