NEW YORK (AP) — Ford is recalling more than 850,000 of its cars across the United States because the low-pressure fuel pump inside the vehicles may fail and potentially cause an engine stall while driving, increasing crash risks.

The recall covers a range of Ford and Lincoln-branded vehicles made in recent model years. That includes certain Ford Broncos, Explorers and F-150s, as well as Lincoln Aviators and Navigators, according to documents published last week by the National Highway Traffic Safety Administration.

Ford plans to send out notification letters to affected owners starting this week to warn of safety risks related to potential fuel pump failure. Yet a remedy is still “under development,” the NHTSA’s recall report notes.

It wasn’t immediately clear if there was an estimate for when a fix would become available. The recall report noted that owners will receive an additional letter with instructions to take their car to an authorized dealer for that service when the time comes, and that there will be no charge.