{"nhtsa_id":10170219,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-07-28","date":"2015-07-01","document_id":"2025177/3","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"Mulsanne damper suspension noise Customer statement / workshop findings: Occasional pneumatic whooping noise from the front suspension and infrequently from the rear suspension. The noise occurs when driving over speed humps, driving on uneven surfaces at high speeds or mounting kerbs Technical background: Occasional whooping noise emanating from the front or rear suspension. The noise can be apparent when driving over speed humps above 15 MPH, driving on uneven surfaces at high speeds or when mounting or dropping down from kerbs. The whooping noise is very difficult to replicate, and is evident only after a long drive cycle No further action is required. Measure: This is an understood phenomena under specific dynamic conditions and is therefore categorised as normal vehicle operation and as such does not require further investigation","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10170219-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10170219-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170219","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BENTLEY","model":"MULSANNE","year_from":2011,"year_to":2014,"match":"exact","vehicle_ids":["2011_bentley_mulsanne","2012_bentley_mulsanne","2013_bentley_mulsanne","2014_bentley_mulsanne"]}],"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":[]}