{"nhtsa_id":10239623,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-25","date":"2023-07-19","document_id":"SSM 51799","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; POWER TRAIN","mfr_system":null,"summary":"Some 2020-2023 Escape and 2021-2023 Bronco Sport vehicles equipped with the 1.5L engine may exhibit a lugging vibration and/or boom noise while driving in gears 5-8 at approximately 1500 engine revolutions per minute (RPM). This may be felt more when the engine is under a light to moderate load. A vibration and/or boom noise could be generated from the firing frequency of the 3 cylinders or when cylinder deactivation occurs and the engine is running on 2 cylinders. This condition is more noticeable when the vehicle is driven in ECO mode. This mode was designed to deliver maximum fuel efficiency and increase the driving range.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239623-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239623-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239623","components":[{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"BRONCO SPORT","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_ford_bronco-sport","2022_ford_bronco-sport","2023_ford_bronco-sport"]},{"make":"FORD","model":"ESCAPE","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_ford_escape","2021_ford_escape","2022_ford_escape","2023_ford_escape"]}],"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":[]}