I am trying to make a decision as I have received the dreaded Code P0A80. I took my 2010 Gen 3 (w/226K miles on her) to the dealer, and they explained that my HV battery had over heated because the port for the fan to cool the HV battery was clogged (This is located in the rear passenger side in between the door and seat). I was not aware that this has to be cleaned (the dealership recommended every 5k miles). So based on this explanationI took the time to disassemble my back seat to access the fan and port to ensure they are clean and good as new. After I cleaned the port and fan, I disconnected the 12V battery to have the system reset. This removed the "Check Hybrid System" warning and allowed my car to operate on both battery and motor again. My thought process was that perhaps the warning would come on, force motor only, in an attempt to preserve the battery from being damaged from overheating. If that was the case, and my port and fan were now operating as intended, I would not expect the "Check Hybrid System" warning to come back on. Several days later it did, so this meant I was going to escalate to the next plan. I contacted Toyota, requested the help through their goodwill warranty. They responded with a willingness to offer $1K towards the replacement. I was informed by the dealership the replacement would cost $3200 less the $1000 offered from Toyota, roughly costing me $2200 plus tax. I am weighing this against options from GoVoltage and GreenTecAuto both with remanufactured batteries with a 1 yr and 18 month warranty respectively. Both are roughly $1850. The decision is that I can save the money by waiting another week more for the Dealer option, but it hurts my heart a little bit to have that amount spent..so just looking for thoughts. Thank you in advance.