NHTSA Complaint #11569065 — 2023 FORD F-350 SD

The contact owns 2023 Ford F-350 SD. The contact stated that the air recirculation system disengaged intermittently when the A/C was not set to the MAX setting. The contact stated that while activating the heat in cold weather, the air recirculation system disengaged intermittently, causing outside air and a strong toxic odor to enter the cabin of the vehicle, causing the contact health concerns. The manufacturer was notified of the failure and informed the contact that the vehicle was operating as designed, and that the air recirculation system could only remain engaged while the A/C was set to the MAX setting. The vehicle was taken to the dealer, where a smoke test was performed, and the dealer informed the contact that there was no exhaust leak. The vehicle was not repaired. The failure mileage was approximately 7,500.