Toyota has announced that it will recall 55,519 hybrid cars in the United Kingdom as part of a 2.4 million-car global recall.
The identified fault occurs when a specific hybrid component failure, coupled with hard acceleration, causes the vehicle to lose power rather than enter a fail-safe driving mode.
Vehicles sold in Japan, America, Europe, China, Africa, and other regions are also affected.
In the US, the recall covers more than 800,000 vehicles: the model year. The company issued recalls in 2014 and 2015 to address similar issues but "did not anticipate this new condition" at the time, Toyota said Friday.
Toyota said it would update the software in the vehicles for free. This could cause the vehicle to stall, which could increase the risk of a crash when driving at high speeds.
A Toyota Australia spokesman said there had been no incidents or injuries reported in Australia linked to the fault, and that the software can be reprogrammed in around 40 minutes.
"Toyota has found that in rare situations, the vehicle may not enter a failsafe driving mode as intended".
When that happens, "the vehicle could lose power and stall".
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The Prius and Prius V vehicles may contain a software fault in their ECU.
The company had received three reports in Japan related to the issue as of the end of September, but wasn't aware of any crashes in the country, Jault said. In November 2017, Toyota recalled the 2012-2015 Prius Plug-in for fuses that could similarly shut down the entire vehicle while driving.