{"nhtsa_id":10211285,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-05-07","date":"2022-04-01","document_id":"US12_3, 4","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING; SERVICE BRAKES","mfr_system":null,"summary":"MACK DEFENSE-Brake Lights Trailer Relay, High/Brake Lights Trailer Relay, Low","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10211285-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10211285-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10211285","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","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":[]}