{"nhtsa_id":10201974,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-10-06","date":"2021-09-10","document_id":"2060205/3","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Engine Cooling System - DTC P218100 - V8 Kovomo Customer statement / workshop findings: Emission Control Lamp illuminated on Driver Instrument Panel. The time to reach the correct engine coolant operating temperature has increased. Diagnostic Trouble Code(DTC) P218100 -Cooling System Performance is stored in the Engine Control Module (ECM), the vehicle warm up time is longer when compared to other vehicles of the same type. Technical background: It is possible for the engine coolant Thermostat to corrode overtime, this corrosion is due to an adverse reaction of the Thermostat material with the engine coolant. The corrosion and subsequent build-up of debris prevents the correct operation of the thermostat when closing, resulting in over cooling. The ECM triggers a DTC when the target engine temperature is outside of the specified parameter.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10201974-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10201974-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10201974","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":["P2181"],"topics":[],"vehicles":[{"make":"BENTLEY","model":"BENTAYGA","year_from":2018,"year_to":2022,"match":"exact","vehicle_ids":["2018_bentley_bentayga","2019_bentley_bentayga","2020_bentley_bentayga","2021_bentley_bentayga","2022_bentley_bentayga"]},{"make":"BENTLEY","model":"BENTAYGA HYBRID","year_from":2019,"year_to":2021,"match":"base","vehicle_ids":["2019_bentley_bentayga","2020_bentley_bentayga","2021_bentley_bentayga"]},{"make":"BENTLEY","model":"CONTINENTAL GT","year_from":2018,"year_to":2022,"match":"base","vehicle_ids":["2018_bentley_continental","2019_bentley_continental","2020_bentley_continental","2021_bentley_continental","2022_bentley_continental"]},{"make":"BENTLEY","model":"CONTINENTAL GT CABRIO","year_from":2018,"year_to":2022,"match":"base","vehicle_ids":["2018_bentley_continental","2019_bentley_continental","2020_bentley_continental","2021_bentley_continental","2022_bentley_continental"]}],"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":[]}