{"nhtsa_id":10170092,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-17","date":"2016-05-02","document_id":"2043019/1","mfr_campaign":null,"replaces":null,"component":"STEERING","mfr_system":null,"summary":"Mulsanne Steering Gear - Hydraulic Oil leak Customer statement / workshop findings Increased steering effort, power steering pump noise or a hydraulic fluid leak from the underside of the vehicle. Hydraulic fluid leak from the Steering Rack Pinion Bearing. Technical background The Steering Rack may leak low pressure hydraulic fluid from the Pinion Bearing due to degradation of the Pinion Bearing oil seal. An improved material specification for the Pinion Bearing oil seal has been introduced. Measure Vehicles with less than 10.000 miles / 16.000 kilometres or under one year old Replace the Steering Rack Assembly Refer to Rep. Gr.48. Steering Rack To Remove and Fit. Vehicles with a repeat failure - Replace the Steering Rack Assembly Refer to Rep. Gr.48. Steering Rack To Remove and Fit. Vehicles with a first time failure, over 10.000 miles or 16.000 kilometres - replace the Pinion Bearing oil seal. Refer to Pinion Bearing Oil Seal Replacement Below.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10170092-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10170092-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170092","components":[{"id":"steering","name":"Steering","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":[]}