{"nhtsa_id":10179591,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-11","date":"2020-08-06","document_id":"SC-20-079","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR; EQUIPMENT","mfr_system":null,"summary":"This retrofit changes the traction motor inverter enable signal from 12 to 24 volts to improve reliability.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179591-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179591-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10179591","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hybrid-ev","name":"Hybrid and electric drive","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PROTERRA","model":"CATALYST","year_from":2017,"year_to":2018,"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":[]}