The official notice
Defect
On certain vehicles, long-term exposure to high absolute humidity and temperature, combined with high temperature cycling, may eventually degrade the propellant contained in the passenger-front airbag. This could cause the airbag to deploy with more force than normal. If the airbag inflator ruptures, fragments could be propelled toward vehicle occupants or cause damage to the airbag assembly, preventing its proper function.
Safety Risk
If the vehicle is involved in a crash requiring an airbag deployment, the airbag inflator could rupture and create a risk of injury.
Remedy
Owners will be notified by mail and instructed to take their vehicle to a dealer to have the passenger-front airbag inflator replaced. Note: The Canadian climate results in the propellant degrading slowly. This recall is being conducted as a precaution to address future risk. It is expected that all airbag inflators will be replaced before their function would be affected. Additional note: This recall supersedes recalls 2016-347 (Ford Safety Improvement Program 16S26), 2017-024 (Ford Recall 17S01) and 2018-035 (Ford Recall 18S01). Vehicles repaired under the previous recalls do not require repair under this recall.