P0A93

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2008 TOYOTA PRIUS with 103320. miles

My coolant inverter pump has been recalled, and repaired before i bought the car, and the same issue is happening again after i bought the car less than a year ago. Today, the same check engine light came on, went to advanced auto parts and got the code P0A93 - coolant inverter pump failing.
ENGINE, ELECTRICAL SYSTEM ELECTRICAL SYSTEM ENGINE

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2007 TOYOTA PRIUS with 69000.0 miles

2007 Prius (69k miles). Driving on highway, all caution lights came on. Towed to dealer and diagnosed with a 12-volt battery issue. $280 to replace the batter. Three weeks later, same cautions lights. Got most to clear with a restart with the exception of the "master caution" and the "engine check" lights. Dealer showed code of "P0A93" and stated inverter coolant pump needed to be replaced for another $486. Check online shows Toyota knows about the pre-2006 issues and that many 2007 and beyond owners are running into the same issue at various miles.
ENGINE AND ENGINE COOLING:COOLING SYSTEM, ELECTRICAL SYSTEM

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2006 TOYOTA HIGHLANDER HYBRID with 71893.0 miles

Engine mechanical ~|~check and report...Check engine light and vsc light on dash, ,,car lost power while driving, had to pull over and get the vehicle towed in to the dealership... ~|~tech pulled code P0A05,P0A08,P0A93, ...Found inverter pump not working properly ~|~replaced inverter water pump
ELECTRICAL SYSTEM, ENGINE FUEL/PROPULSION SYSTEM

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2005 TOYOTA PRIUS with 41000.0 miles

Tl*the contact owns a 2005 Toyota Prius. The contact stated that the inverter cooling water pump failed. While driving 72 mph with the vehicle speed control engaged, there were several warning lights illuminating causing the vehicle speed control to lose power. He drove onto the side of the road, turned the engine off and allowed the vehicle to cool down and it began to function normally. The contact was able to restart the vehicle and drive safely to his residence. The vehicle was taken to a local mechanic who diagnosed the failure as the water pump which listed error code P0A93. The vehicle was not repaired since the parts were on back order until september 16, 2010. He then contacted the dealer and manufacturer who also informed him that the parts were on critical back order until september 16, 2010. The failure mileage was 41,000.
ENGINE AND ENGINE COOLING:COOLING SYSTEM,

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2004 TOYOTA PRIUS with 69042.0 miles

Driving home at night on the 405 freeway at approx. 65mph, suddenly all the dash warning lights illuminated, including the mil symbol, along with a warning symbol on the navigation screen. I pulled off the freeway and parked at the curb. After checking the owners manual, i slowly drove the rest of the way home on surface streets. The next morning (monday) i drove my car to miller Toyota in culver city. The primary diagnosis was failure of the inverter coolant pump, which was replaced under the terms of my Toyota platinum extended warranty. However, upon further research, i discovered that Toyota had issued a technical service bulletin (tsb) covering this very part, on january 26, 2007, indicating that they were aware of this failure-prone part, and that an "improved" replacement assembly was now available to address the issue. In addition, replacement would be covered under their 5-year/60,000 mile Toyota powertrain warranty. Approximately one month later, on may 15, 2010, while driving my father's 2004 Prius to have new tires installed, the same sequence of events occurred. I immediately drove the vehicle to the nearest dealer, santa monica Toyota, where it was diagnosed with the same failure code, P0A93 (inverter cooling system performance). Although the vehicle had only 34,242 miles on it, it was not covered under the powertrain warranty, as the time limit of 60 months had expired. No amount of discussion with the dealer or Toyota's customer experience center could convince them that this part should be considered part of the hybrid system, and as such be covered under their 7-year/100,000 hybrid warranty (despite it being named the hybrid inverter coolant pump). On-line Prius-related chat rooms are full of identical situations involving this part. Clearly, Toyota knows this part is prone to premature failure, but continues to treat it as a "secret warranty" item in order to avoid having to issue a formal recall.
ENGINE AND ENGINE COOLING:COOLING SYSTEM,