{"nhtsa_id":10170173,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-07-28","date":"2015-05-01","document_id":"2038974/2","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Engine coolant thermostat - Engine start difficult Customer statement / workshop findings: Engine difficult to start Technical background: Engine coolant thermostat failure can result in implausible coolant temperature data being read by the engine control module in some cases this may lead to engine starting difficulties Measure: It is intended that in the event of engine starting difficulties being attributed to a coolant thermostat failure on a Mulsanne prior to VIN SCBBA6ZH9FC001420 then the new thermostat (part number 069121113) can be fitted. This new thermostat will not fit the original thermostat housing (part number 07V121117) therefore the new thermostat housing (part number 07V121117A) must also be fitted","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10170173-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10170173-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170173","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BENTLEY","model":"MULSANNE","year_from":2011,"year_to":2015,"match":"exact","vehicle_ids":["2011_bentley_mulsanne","2012_bentley_mulsanne","2013_bentley_mulsanne","2014_bentley_mulsanne","2015_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":[]}