Ford Motor Company (Ford) has decided that a defect affecting the seat belt warning system could exist in certain 2020-2023 Lincoln Aviator and 2020-2023 Lincoln Corsair vehicles. The vehicles affected are equipped with a Revel Audio System.
The problem was discovered in November 2022 when Ford’s Critical Concern Review Group received complaints pertaining to the seat belt warning chime reminder on a 2022 Lincoln Aviator PHEV.
The seat belt reminder system was tested on various combinations of powertrain and audio systems of Lincoln Aviators in an attempt to reproduce the problem. It was discovered that some Lincoln Aviator PHEV vehicles could experience an initial chime duration of fewer than 4 seconds. An audible signal that is activated for less than 4 seconds can result in decreased safety belt usage, increasing the risk of injury during a crash.
The engineering team and audio supplier conducted a design of experiments to gain a better understanding of the cause and scope of the problem. They found that the problem affected vehicles equipped with the Revel audio system, introduced on the 2020 Lincoln Aviator and Corsair. Further seat belt reminder system evaluations were conducted at Ford assembly plants and it was concluded that 2020-2023 Lincoln Aviator and 2020-2022 Corsair vehicles could experience the symptom of a chime duration of fewer than 4 seconds
According to the defect report, when the driver’s seat belt is not buckled and the vehicle is started, the seat belt warning system may activate the audible warning chime for an insufficient amount of time of fewer than 4 seconds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standards for occupant crash protection.
Owners receiving notices will be asked to contact their dealers about updating the audio control module software in their vehicles. Ford’s number for this recall is 22C35 and the NHTSA campaign number is 22V-953.