The corporate statement is just comical (embarrassing ??) !
From Ford on Friday:
https://media.ford.com/content/fordmedia/fna/us/en/news/2017/10/ford-announces-complimentary-service-for-2011-17-retail-explorer.html
"DEARBORN, Mich., Oct. 13, 2017 – Ford is aware that some 2011-17 Explorer owners have concerns about exhaust or carbon monoxide. These vehicles are safe. .....
But then ~ ~ ~
"However, for our customers’ peace of mind, .....