{"nhtsa_id":11013381,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-02-03","date":"2021-12-01","document_id":"SC-21-139","mfr_campaign":"SC-21-139","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Transit bus software update the HVAC controllers from our supplier. Adds additional protection from over current and logic for the heater safety switch faults that can occur on shutdown and restart.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-11013381-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-11013381-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013381","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PROTERRA","model":"CATALYST","year_from":2019,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"PROTERRA","model":"ZX5","year_from":2019,"year_to":2021,"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":[]}