GM recalls all-electric Chevy Bolt for second time due to fire hazard

General Motors Co. is recalling its all-electric Chevrolet Bolt for the second time due to a possible battery defect that can cause a fire, underscoring the technical challenges auto companies face as they compete to develop more plug-in vehicles.

GM said Friday that its investigation into recent battery fires involving cars found that manufacturing defects in a certain battery cell were the main cause. Owners of 2017-2019 Bolts models are asked to keep their EV charges at a certain level and to park their cars outside after charging.

Under the previous recall, started in November, 69,000 bolt owners were advised to get a software update that would monitor the status of the lithium-ion battery and flag any potential problems.

GM has since learned that at least one battery fire occurred in a vehicle that had received the software update, a company spokesman said. The company is aware of eight total fires and two related injuries, but no deaths, he said.

“Unfortunately, the software update was not fully effective in addressing the safety risk in the vehicle, hence the second recall,” the spokesperson said.

Source: WSJ

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