{"nhtsa_id":10236034,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-05-24","date":"2023-05-04","document_id":"TSB 23-2135","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM","mfr_system":null,"summary":"Some 2021-2022 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit various charging system error messages and/or illuminated charging system indicator displayed in the instrument panel cluster (IPC) with diagnostics trouble code (DTC) B11DB set within the body control module (BCM). This may be due to coolant contamination into the battery monitor sensor (BMS) from a leaking transmission fluid heater coolant control valve. To correct the condition, follow the Service Procedure to clean the BMS connector and replace the transmission fluid heater coolant control valve.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10236034-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10236034-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10236034","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"body-control-module","name":"Body control module","parent":"electrical"}],"codes":["B11DB"],"topics":[],"vehicles":[{"make":"FORD","model":"BRONCO","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_ford_bronco","2022_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":[]}