{"nhtsa_id":10206872,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-02-04","date":"2022-01-28","document_id":"TSB 22-2018","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT","mfr_system":null,"summary":"Some 2021 Broncos may exhibit a whistle noise coming from the front center of the vehicle and/or the climate control housing. This may be due to the sealing on the climate control case. To correct the condition, follow the Service Procedure to apply butyl tape to cover small holes in the fresh air inlet door.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10206872-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10206872-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10206872","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"BRONCO","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_ford_bronco"]}],"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":[]}