2022 Porsche Cayenne

I own a 2022 Porsche Cayenne. The vehicle intermittently displays a red “Occupant seat belt not fastened – Fasten seat belt” warning and sounds the seat belt warning chime while the front passenger seat is completely unoccupied and nothing is placed on the seat. This problem first began intermittently in approximately 2025 and has continued to occur. In September and October, 2026, the problem occurred again for over one week now while I was driving. The front passenger seat was completely empty, but the vehicle indicated that an occupant was present and needed to fasten the seat belt. I photographed the instrument cluster while the warning was active. I am concerned that the vehicle may be incorrectly detecting the occupancy status of the front passenger seat or may have a malfunction in the passenger seat belt/occupant restraint system. Because passenger occupancy information may be used by the vehicle’s restraint and air bag systems, I am concerned about whether the vehicle can correctly determine passenger occupancy and provide the appropriate restraint protection in a crash. The problem was intermittent, which makes it difficult to reproduce consistently until very recently. The vehicle is available for inspection. Porsche has issued technical information concerning “Occupant seat belt not fastened” warnings on Cayenne vehicles, but to my knowledge my vehicle is not currently covered by a recall for this condition. The manufacturer warranty has expired, although this intermittent problem began before the warranty expired. I am requesting that NHTSA evaluate whether this condition may represent a safety-related defect affecting 2022 Porsche Cayenne vehicles or other similarly equipped Cayenne vehicles.

While driving at highway speed, my 2022 Porsche Cayenne S experienced an air suspension / air spring strut failure requiring a dealer repair costing approximately $4,000. Porsche has a related service campaign, WND6 / No. 74-22, for replacement of the front-right air-spring strut on certain 2021-2022 Cayenne vehicles, but stated that my VIN wasn't included in this service campaign. I am reporting this because my vehicle suffered the same failure mode described in the campaign, creating handling and suspension safety concerns. This failure manifested itself while drive increasing the risk of a serious accident. At the time of the incident, the car was 4 years 5 months old and had less than 10,000 miles. The issue first manifested itself with a warning: Chassis System Fault. It then followed up a few miles later with a critical fault: Chassis System Failed.

I am filing a complaint regarding an ongoing and unresolved HVAC odor issue affecting my 2023 Porsche Cayenne S Platinum Edition. Since shortly after taking ownership, the vehicle has consistently produced a strong mildew/musty odor after sitting for several hours. The odor is most noticeable upon startup and only dissipates once the air conditioning system begins circulating. The vehicle has been in and out of the dealership multiple times for diagnosis and repair attempts, yet the issue remains unresolved. Despite the vehicle remaining under the original manufacturer warranty, the dealership has refused to replace the evaporator coil, which I believe to be the source of the issue. The persistent odor negatively impacts vehicle usability and raises concerns regarding potential mold, bacteria, or HVAC contamination within the system. I am requesting further investigation into this issue and Porsche’s handling of repeated unresolved repair attempts under warranty.

The contact owns a 2022 Porsche Cayenne. The contact stated that the message that the mileage could not be recorded was intermittently displayed while driving. Additionally, the contact stated that the rearview camera was intermittently inoperable after shifting to reverse(R). The vehicle was taken to the dealer, and the cameras were replaced; however, the failure recurred approximately 5 months later. The vehicle was taken back to the dealer, where the contact was informed that the vehicle could not be repaired because the failure could not be duplicated. The contact had received notification of NHTSA Campaign Number: 25V896000 (Back Over Prevention), which the contact associated with the failure. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was approximately 8,000.