{"nhtsa_id":10233725,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-04-05","date":"2023-03-14","document_id":"SSM 51439","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Some 2020-2023 Explorer/Aviator 4x4/AWD vehicles with hybrid powertrain may experience a harshness and/or vibration felt through the seat, steering wheel and/or center console after initial driveaway between 25-50 MPH (40-80 Km/h) that lessens after driving 5-10 minutes. This may be due to driveshaft center bearing bounce mode during cold ambient temperatures. To resolve the concern, install a softer durometer L1MZ-4A499-F driveshaft center bearing per Workshop Manual Section 205-01. For claiming, use causal part 4A499 and applicable labor operations in Section 4 of the Service Labor Time Standards (SLTS) Manual.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10233725-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10233725-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10233725","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"EXPLORER","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_ford_explorer","2021_ford_explorer","2022_ford_explorer","2023_ford_explorer"]},{"make":"LINCOLN","model":"AVIATOR","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_lincoln_aviator","2021_lincoln_aviator","2022_lincoln_aviator","2023_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":[]}