{"nhtsa_id":11034431,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-03","date":"2026-06-25","document_id":"01-009-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":"12V Battery","summary":"DESCRIPTION Some vehicles may exhibit a discharged 12V battery when attempting to start the engine. This concern is due to improper control of the Body Control Module (BCM) and Central Gateway (CGW) software, causing the vehicle to repeatedly cycle between wake-up and sleep states, eventually resulting in a discharged battery. To eliminate this concern, the BCM and CGW control software have been modified. REPAIR PROCEDURE 3. Reprogram the BCM and CGW with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic and Repair Software (MDARS II): MDARS II ECU Reprogramming Procedure.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034431-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034431-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034431","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MAZDA","model":"CX-5","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_mazda_cx-5"]}],"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":[]}