{"nhtsa_id":10231924,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-02-21","date":"2023-01-24","document_id":"TSB230013","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; EQUIPMENT","mfr_system":null,"summary":"This technical service bulletin was issued for A motor high temperature error can display on the instrument cluster.Root Cause: When in the closed position the OEM coolant valve restricts coolant flow through the high voltage propulsion motor. For type C bus: The manual coolant valve is in the OFF position. The coolant valve is located on the left side of the driver?s seat.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231924-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231924-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10231924","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"HDZAA","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}