{"nhtsa_id":10244653,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-11-01","date":"2023-11-01","document_id":"TSB-23009","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"The engine block heater wiring was extended and spliced into the shoreline power with the battery charger on some Commercial Chassis Fire Trucks. This may cause a high amp draw on the shoreline power so here is how to fix it.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244653-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244653-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10244653","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ROSENBAUER","model":"COMMERCIAL F-550","year_from":2022,"year_to":2022,"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":[]}