{"nhtsa_id":10179443,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-05","date":"2020-08-14","document_id":"2060418/1","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Vehicle vibration / humming at idle - Active engine mount leak - Active engine mount replacement. Customer statement / workshop findings Vehicle vibration / humming noise at idle Technical background Right hand Active Engine Mount (AEM) failed, oil may also be leaking from the AEM (Figure 1). This failure mode is only seen on W12 engine installations and is only apparent at idle. Current software is incompatible with AEM part numbers 4M0 199 255/6 BH. When the AEMs are replaced with the above part numbers, the AEM control module must be reprogrammed or replaced as detailed within the onward instructions","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179443-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179443-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10179443","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BENTLEY","model":"BENTAYGA","year_from":2017,"year_to":2020,"match":"exact","vehicle_ids":["2017_bentley_bentayga","2018_bentley_bentayga","2019_bentley_bentayga","2020_bentley_bentayga"]}],"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":[]}