DETROIT — Honda is recalling half a million vehicles in the US and Canada because the front seat belts may not fasten properly.

The recall covers some of the automaker’s best-selling models, including the 2017 through 2020 CR-V, the 2018 and 2019 Accord, the 2018 through 2020 Odyssey and the 2019 Insight. Also included is the Acura RDX from the 2019 and 2020 model years.

Honda says in documents released Wednesday by US safety regulators that the surface coating of the buckle channel can deteriorate over time. The release button can contract against the channel at cooler temperatures, increasing friction and preventing the buckle from snagging.

If the buckle does not lock, the driver or passenger may not be restrained in a crash, increasing the risk of injury.

Honda says it has no reports of injuries caused by the problem.

Dealers will replace the front seat belt buckle release buttons or buckle assemblies if necessary. Owners will be notified by letter beginning April 17.