{"nhtsa_id":10252636,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-04-04","date":"2024-03-20","document_id":"SSM 52373","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM","mfr_system":null,"summary":"Some 2020-2024 Aviator vehicles equipped with auto air refresh option (minor feature code G1DAG) may exhibit a buzzing/clicking/humming/ticking sound from the OHC and/or diagnostic trouble code (DTC) P24AE in the heating ventilation and air conditioning (HVAC) module. To confirm if a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS). If diagnostics lead to the in-vehicle temperature and humidity sensor as the causal part, a new lower level part is available. It is not necessary to replace the OHC assembly if only the sensor is suspect. Use part number L1MZ-19F666-A to resolve the concern.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10252636-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10252636-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10252636","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":["P24AE"],"topics":[],"vehicles":[{"make":"LINCOLN","model":"AVIATOR","year_from":2020,"year_to":2024,"match":"exact","vehicle_ids":["2020_lincoln_aviator","2021_lincoln_aviator","2022_lincoln_aviator","2023_lincoln_aviator","2024_lincoln_aviator"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}