{"nhtsa_id":10248389,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-06","date":"2023-12-05","document_id":"SA-025-23a","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY","mfr_system":null,"summary":"When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.. CAUTION: DO NOT swap TCU with another vehicle as the TCU is VIN locked after activation. A TCU swap with another vehicle will disable Connected Services on both vehicles. If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to return to the dealer for repairs.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248389-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248389-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248389","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MAZDA","model":"CX-30","year_from":2020,"year_to":2024,"match":"exact","vehicle_ids":["2020_mazda_cx-30","2021_mazda_cx-30","2022_mazda_cx-30","2023_mazda_cx-30","2024_mazda_cx-30"]},{"make":"MAZDA","model":"CX-5","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_mazda_cx-5","2022_mazda_cx-5","2023_mazda_cx-5","2024_mazda_cx-5"]},{"make":"MAZDA","model":"CX-50","year_from":2023,"year_to":2024,"match":"exact","vehicle_ids":["2023_mazda_cx-50","2024_mazda_cx-50"]},{"make":"MAZDA","model":"CX-9","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_mazda_cx-9","2022_mazda_cx-9","2023_mazda_cx-9"]},{"make":"MAZDA","model":"CX-90","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_mazda_cx-90"]},{"make":"MAZDA","model":"MAZDA3","year_from":2019,"year_to":2024,"match":"exact","vehicle_ids":["2019_mazda_mazda3","2020_mazda_mazda3","2021_mazda_mazda3","2022_mazda_mazda3","2023_mazda_mazda3","2024_mazda_mazda3"]},{"make":"MAZDA","model":"MX-30","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_mazda_mx-30","2023_mazda_mx-30"]}],"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":[]}