Toyota has launched a global recall of more than one million cars, including those fitted with airbags that can be triggered inadvertently by electrical interference from other vehicles.
It said a computer chip in the airbag control unit can malfunction when it receives electrical impulse from other cars.
The fault means there does not need to be any impact for the airbags to deploy.
The problem has caused minor injuries such as abrasions in 18 cases that have been reported, Toyota spokesman Naoto Fuse said.
Two accidents have been reported by customers outside Japan, although Toyota has not been able to confirm them, he added.
The airbag recall affects 752,000 Corolla and Corolla Matrix vehicles in the United States.
Toyota UK has confirmed to Sky News that the fault only affects left-hand drive, non-European vehicles.
Toyota said it will add an electrical signal filter to the airbag control module to the recalled vehicles - repairs expected to take an hour to hour-and-a-half, according to Mr Fuse.
The spokesman declined to disclose the costs involved for the recall.
The news comes just days after Toyota was crowned the world's top-selling carmaker.
Separately, Toyota will also recall 385,000 Lexus IS and its series, including 270,000 Lexus IS vehicles in the US, over windscreen wiper problems.
The wiper arm nut of the front wiper in the affected vehicles may not be tight enough and the wiper may not work under certain weather occasions, including in snow.
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