{"nhtsa_id":11013823,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-02-06","date":"2020-10-21","document_id":"SC-20-147","mfr_campaign":"SC-20-147","replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Transit bus software update to support the quarterly cadence of software upgrades. This release updates a timer to the drivers seat to reduce false alarms of no driver in the seat over bouncy roads, mapped new output for horn relay. For the vehicle controller fixed issue around the ambient and coolant temp sensor. And many other fixes seen in the documentation","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-11013823-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-11013823-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013823","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PROTERRA","model":"CATALYST","year_from":2019,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"PROTERRA","model":"ZX5","year_from":2019,"year_to":2020,"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":[]}