The same fire forced other automakers to also halt or at least slow production.
Employees at truck plants in Dearborn, Michigan, and Kansas City, Missouri, were notified that they might return to work on May 18, Ford confirmed on Friday.
The shortage of parts could knock out production of Ford's best selling and most profitable vehicle, the F-150 pickup truck.
Kilauea could erupt with 'once-in-a-century' explosion, geologists warn
One of the nearest communities, creatively named Volcano, and its roughly 2,000 people are about three miles from the summit. The plant has been shut down, and workers are trucking away 60,000 gallons of flammable liquids.
A fire that damaged a MI auto parts supply factory is causing production problems at Ford, Fiat Chrysler, BMW and General Motors, but it's too soon to tell whether dealers will run short of vehicles.
Ford could get F-150 production back up and running as early as late next week after a fire damaged a key supplier's factory.
"The company doesn't know when or for how long we will be down", wrote Burkie Morris of the UAW in a letter to members.
Aston Martin presented a powerful coupe
This variant gets more carbonfibre detailing and an interior trimmed with Dark Knight leather and contrasting lime details. With the AMR, he added, "we felt the V12 could reveal more of its sporting potential, while remaining the consummate GT".
Ford stocks were down marginally in after hours trade, in £11.19.
The F-150 has been the top selling USA vehicle by any manufacturer for more than 40 years.
Dealers' inventories of the f-series trucks are large enough to prevent near term shortages. "But when you have a vehicle that comprises a quarter of your company's sales, any production disruption is going to cause some consternation".
Lukaku may only be fit for bench role in final - Jose
United have since gone two games without a goal and Mourinho is keen to have Lukaku back to play a part - any part - at Wembley. But the Portuguese hopes the Manchester United medical team can get him up to speed enough to have him on the bench.
Ford has sold 287,000 F Series trucks in the United States in the first four months of this year, up 4% compared to a year ago. Meanwhile, the automaker ended April with almost a quarter million trucks on the ground at dealerships, a high percentage were F-150 models.