{"nhtsa_id":10190097,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-04-08","date":"2021-03-12","document_id":"2062569/1","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Mulsanne Premium Audio Amplifier-No sound with DTC's-UD140600 and/or UD140B00. Customer statement / workshop findings: - No sound from the Premium Amplifier - Sporadic high quiescent battery drain - Diagnostic Trouble Codes UD140600 High Static Current and UD140B00 Energy Management Active may be stored. Technical background: The Premium Amplifier does not shut down when the vehicle ignition is deactivated, this is due to a missing or ignored message between the Amplifier Power Board and the Amplifier Main Controller.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10190097-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10190097-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10190097","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BENTLEY","model":"MULSANNE","year_from":2011,"year_to":2016,"match":"exact","vehicle_ids":["2011_bentley_mulsanne","2012_bentley_mulsanne","2013_bentley_mulsanne","2014_bentley_mulsanne","2015_bentley_mulsanne","2016_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":[]}