Volkswagen (VOW3.DE) has recalled its Atlas SUVs and Passat sedans for a possible headlight misalignment issue, which could present a safety hazard when driving.

The recall reportedly affects 662,185 vehicles, Cnet reported. The Atlas SUVs recalled include model year 2018 and 2019 while the Passat sedans include model years 2012 to 2020.

The headlight issue was caused by a single cap that was not installed during the assembly process. The cap keeps the aim adjuster aligned and could allow a vehicle owner to adjust the headlights’ aim, which is a violation of federal regulation, which prevents horizontal adjustment after assembly.

The misaligned headlights could reportedly cause glaring when driving and may not illuminate the road ahead properly.

The problem was discovered by Volkswagen in early 2019 when it discovered missing installation instruction for the adjustment cap, Cnet said. The company corrected the issue by updating the work instructions and by identifying the number of vehicles affected, according to the news outlet.

Dealers have been notified of the recall and vehicle owners can expect to receive notifications by mail starting July 10, according to Consumer Reports. Dealers will inspect vehicles to determine if the blocking cap is missing and will then install the cap.

Vehicle owners with questions about the recall can contact Volkswagen at 1-800-253-2834. The recall number is 94L9.

Shares of Volkswagen stock were up 2.20 percent as of 10:02 a.m. on Wednesday.