{"nhtsa_id":10149360,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-11-26","date":"2014-10-01","document_id":"170114","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Low Coolant Level with No Sign of External Leaks. The Low Coolant Warning light is on and there are no signs of a visual leak. Pressure testing the cooling system may or may not show an internal leak (loss of pressure). There may also be a complaint of transmission fluid leaking from the vent on top of the transmission; poor shift quality; or a shuddering from the transmission. There is an internal failure of the automatic transmission oil cooler, allowing coolant to mix with transmission fluid. Possible faulty coolers were built between 6/6/2013 and 8/4/2013.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10149360-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10149360-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10149360","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"320I","year_from":2013,"year_to":2014,"match":"exact","vehicle_ids":["2013_bmw_320i","2014_bmw_320i"]},{"make":"BMW","model":"328D","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_bmw_328d"]},{"make":"BMW","model":"328I","year_from":2013,"year_to":2014,"match":"exact","vehicle_ids":["2013_bmw_328i","2014_bmw_328i"]},{"make":"BMW","model":"335I","year_from":2013,"year_to":2014,"match":"exact","vehicle_ids":["2013_bmw_335i","2014_bmw_335i"]},{"make":"BMW","model":"428I","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_bmw_428i"]},{"make":"BMW","model":"435I","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_bmw_435i"]},{"make":"BMW","model":"ACTIVE HYBRID 3","year_from":2013,"year_to":2013,"match":null,"vehicle_ids":[]},{"make":"BMW","model":"ACTIVE HYBRID 3","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_bmw_activehybrid-3"]}],"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":[]}