{"nhtsa_id":10239478,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-18","date":"2023-07-12","document_id":"SSM 51784","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS; EQUIPMENT","mfr_system":null,"summary":"Due to a supplier chip-shortage, 2023 Bronco vehicles built on or before 11-Jul-2023 and equipped with a 6-speaker sound system come with a non-operational rear amplifier. This non-operational amplifier (service part number N2DZ-18C804-B) will not produce sound (by design) from the rear subwoofer. The non-operational rear amplifier and subwoofer assembly will appear identical to a working system. Customers have been notified and compensated appropriately for this change to the vehicle. For more details, refer to the Electronic Field Communication titled Product Offering Changes: Ford Bronco Audio System published on 09-Dec-2022. Vehicles that meet these criteria should not be diagnosed for a symptom related to poor/no performance from the rear subwoofer.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239478-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239478-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239478","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"BRONCO","year_from":2023,"year_to":2023,"match":"exact","vehicle_ids":["2023_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":[]}