Tesla said a Model S fire in Shanghai was caused by a single battery module.
The fire, which broke out in April, attracted international headlines, prompting Tesla to issue an explanation. Additionally, Tesla issued a software update it said will help prevent the failure from occurring in other vehicles.
Tesla said an investigation of the incident included analysis of the car’s batteries, software, manufacturing data, and history. The team ultimately determined that a single battery module led to the car going up in flames.
Tesla’s announced the findings Friday on its official Weibo account.
The new software update changes the charge and thermal management settings for the Model S and Model X. Tesla said the update will not only improve safety, but also longevity of the batteries.