In October, news broke that the National Highway Traffic Safety Administration had opened an investigation into the Chevrolet Bolt EV due to a possible battery fire during charging. On Friday, Chevrolet announced to affect all model year 2017 and 2018 Bolt EVs, as well as of course the MY2019 Bolt EV.
The problem involves LG Chem’s factory-built battery pack in Oshang, Korea. Chevrolet states that, working with NHTSA, it confirmed a total of five bolt EV fires due to the problem, which occurred when the cars’ battery packs were fully charged.
Affected owners should contact their local Chevrolet dealer to schedule the software fix, which is available later this week. (You can check NHTSA’s database to see if your vehicle identification number is included.) The update will prevent more than 90 percent of the battery from being charged, and Chevrolet says it will have a permanent fix that will keep the battery Restores 100 percent of its capacity to use its state. As soon as possible after January 1, 2021.
Meanwhile, Chevrolet is asking owners of affected cars to change their charging settings to prevent any possibility of a fire before applying patches.
For owners of the MY2017 and MY2018 Bolt EVs, this means enabling Hilltop Reserve Mode, which instructs the battery to leave 10 percent overhead on charging. For owners of affected MY2019 Bolt EVs, which have slightly different settings, Chevrolet calls for enabling the target charge mode, which should be set to 90 percent. (Video instructions are available on Chevrolet’s Bolt EV recall page.) The company says that if you are not sure whether to install yourself, you should not keep your Bolt EV in the garage or under the carport until The car has not been compromised.