{"nhtsa_id":10169942,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-08","date":"2019-12-16","document_id":"SSM 48404","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"Some 2017-2020 F-150 vehicles equipped with a 3.5L EcoBoost engine, 2018-2020 F-150 vehicles equipped with a 2.7L EcoBoost or 5.0L engine, 2019-2020 F-150 vehicles equipped with a 3.0L engine, and an externally controlled variable displacement compressor (EVDC) may exhibit a high pitched squeal or whistle type noise from the engine compartment after the engine is shut off. This condition may be due to the air conditioning (A/C) low side system pressure exceeding the high side pressure resulting in equalization of A/C system pressures through the EVDC A/C compressor. This noise is not detrimental to system operation or durability. Do not attempt diagnosis or repairs for this condition at this time. Engineering is investigating, monitor OASIS for updates.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169942-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169942-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10169942","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":2017,"year_to":2020,"match":"exact","vehicle_ids":["2017_ford_f-150","2018_ford_f-150","2019_ford_f-150","2020_ford_f-150"]}],"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":[]}