{"nhtsa_id":10244236,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-11-01","date":"2023-10-16","document_id":"B170100","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"The lower radiator coolant return hose may come in contact with the secondary air system check valve flange gasket when the engine coolant is at operating temperature due to coolant system pressure and expansion of the hose.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244236-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244236-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10244236","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"540I","year_from":1999,"year_to":1999,"match":"exact","vehicle_ids":["1999_bmw_540i"]},{"make":"BMW","model":"740I","year_from":1999,"year_to":1999,"match":"exact","vehicle_ids":["1999_bmw_740i"]}],"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":[]}