In an unprecedented move, the biggest Japanese automaker Toyota is recalling 670,000 units of its Prius hybrids it produced between 2004 and 2009. The focus would be the U.S. market, where reports of loss of steering and hybrid powertrain issues have been reported to the National Highway Traffic Safety Administration.
This is just part of the total recall of 2.77 million units, which include not just the Prius but also the Corolla and the Wish worldwide. These vehicles distributed worldwide are being recalled because a specific metal in the steering mechanism is not able to withstand the stresses involved in its operation. According to a statement from the company, “the part could wear out of the steering wheel is frequently and forcefully turned to the full left or full right position while driving at low speeds and that could result in the loss of steering ability.”
The first reports on the metal failure came to the attention of the carmaker back in February 2010, but the results were inconclusive. This year, specifically last February, Toyota was first notified of the steering loss of a unit in the United States. After a thorough investigation, the Japanese automaker finally identified the cause of the issue and decided on issuing a recall to correct the mechanical problem.
A second recall would cover 350,000 units and would involve the replacement of an electric water pump that may fail and shut down the hybrid powertrain system. This though would not affect the gas engine’s operation, according to an email from Toyota spokesman Bryan Lyons.
Toyota reported to the NHTSA the water pump issue back in 2009 and was redesigned for 2010. However, pump failures continued and Toyota was finally able to identify the problem as a coil wire that once scratched would corrode and break leading to the water pump failure. This is the second time that the Prius hybrid system had a problem with its cooling system. Back in 2010, the company undertook a customer satisfaction campaign that covered 390,000 model 2004 to 2007 Priuses sold in North America. The company promised to replace the coolant pump as it could result in malfunction leading to stoppage in the operation of the hybrid system.
Also covered in the email from Mr. Lyons, the service campaign dealt with a “different problem than the new recall.” It reiterated that the customer satisfaction program was sufficient as the vehicle can still run on the gasoline engine alone. It further reiterated that there have been no reports on any accidents in the United States related to the recall issued. The recalls though is deemed voluntary but once a safety problem has been identified, the company is required to inform the NHTSA within five (5) business days its recall plan and failure would result in fines and penalties.