American Honda is recalling 635,808 vehicles in the United States because a software problem can cause the electric power steering to lose its assist. The recall covers certain 2023 to 2025 Honda Pilots, 2022 to 2024 Acura MDXs and 2021 to 2025 Acura TLXs.

The National Highway Traffic Safety Administration’s campaign record says the software can put the steering system into a failsafe mode that disables the assist. Losing that assistance increases the risk of a crash or injury. Honda dealers will reprogram the electric power steering control unit free of charge.

When owners can check their VIN

NHTSA says affected vehicle identification numbers will be searchable starting Wednesday, Nov. 11. Owners can enter the 17-character VIN at NHTSA’s recall lookup. The model-year ranges identify vehicles to check. The VIN lookup will tell owners whether the campaign applies to their particular vehicle once those records are available.

Honda expects to mail owner letters on Dec. 14. Owners with questions can call American Honda at 1-866-784-1870. The federal campaign number is 26V721000, and Honda lists KQB and TQA as its recall numbers. Use those numbers when contacting a dealer so the service department can identify the steering software campaign.

NHTSA’s record lists Oct. 29 as the date it received the recall report. Nov. 11 is the date the agency gives for the VIN lookup to begin.