Last Thursday, having reportedly received more than 100 complaints in Japan and a handful in the U.S., Toyota admitted there was a problem with the ABS in the 2010 Prius.
Hiroyuki Yokoyama, a Toyota managing director responsible for quality control, said the problem involved the software that controls the car's anti-lock braking system. When the ABS is engaged, some drivers may feel a short "pause" when the car’s brakes switch from "regenerative" mode – which tops up the rechargeable battery – to standard hydraulic braking.
At the time Toyota said there were no plans to issue a recall. Engineers had reprogrammed the ABS software in January (when dealers started receiving complaints) and the carmaker said that when it came to cars already sold, the company would perform updates "on request only."
Today Toyota issued a recall for 437,000 vehicles. Though the recall is a direct result of the Prius problem reported last week, the recall is not exclusive to the 2010 Prius; also included are the Sai (primarily sold in Japan) and the Lexus HS250h.
Apologizing for the inconvenience and causing concern, President Akio Toyoda said his company would work to recover its customers' trust.