{"nhtsa_id":11037663,"type":"other","type_name":"Other","date_added":"2026-10-01","date":"2026-09-04","document_id":"MCD-017","mfr_campaign":"MCD-017","replaces":null,"component":"EXTERIOR LIGHTING","mfr_system":null,"summary":"A software issue was causing the turn signal to stop functioning if the brake pedal was depressed. Instructions on verifying that the brake lights and turn signals function correctly and if not, how to correct.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037663-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037663-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037663","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"TIFFIN","model":"ALLEGRO BUS","year_from":2027,"year_to":2027,"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":[]}