{"nhtsa_id":10144911,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-09-24","date":"2018-08-21","document_id":"TSB 18-2244","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Some 2015-2018 F-150 vehicles equipped with a 3.3L, 3.5L Duratec, 3.5L EcoBoost and 5.0L engine without a block heater may exhibit a lack of heat concern from the heating ventilation and air conditioning (HVAC) system when operating the vehicle in temperatures consistently below -20 degrees C (4 degrees F). This condition may be due to deposits from the engine coolant becoming trapped in the heater core. Follow the Service Procedure steps to correct the condition.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10144911-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10144911-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10144911","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":2015,"year_to":2018,"match":"exact","vehicle_ids":["2015_ford_f-150","2016_ford_f-150","2017_ford_f-150","2018_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":[]}