General Motors has recalled 50,249 2011-2013 Chevrolet Volt range extender cars to update software so occupants are not inadvertently subject to the risk of carbon monoxide poisoning.
In many hybrid cars drivers are unable to tell the difference between the car running only on its battery and when the petrol engine also is running. If the engine starts to recharge the battery when the car is idle, passengers could be affected by carbon monoxide.
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There have been reports of two people being sickened, GM said.
A software update will fix the problem by restricting the amount of time the vehicle can be left idling in the ‘run’ or ‘on’ settings.
Currently, drivers are warned by chimes if the car is still running, USA Today reported.
