B11DB · Manufacturer communications

FORD · 2026-03-04

Some 2021-2023 Bronco vehicles may exhibit a charging system lamp that illuminates intermittently, and/or diagnostic trouble code (DTC) B11DB:08 in the body control module (BCM). This may be due to a loose fuse terminal for the low voltage high current fuse (3A). If this condition is present, compare fuse removal effort between the low voltage high current fuse and like fuses in the battery junction box (BCMC). If removal effort for the fuse is low, replace the low voltage high current fuse panel assembly to correct this condition. Refer to Workshop Manual (WSM) Section 414-01 > Removal and Installation > Low Voltage High Current Fuse. For claiming, use causal part 14526 and labor time MT14526SSM with a limit of 0.5 hours.

FORD · 2023-11-23

This article supersedes TSB 23-2196 to update the Service Procedure. 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) and/or in line connector 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.

FORD · 2023-10-13

Some 2021-2023 Bronco vehicles may exhibit a charging system lamp that illuminates briefly and/or intermittently, and/or diagnostic trouble code (DTC) B11DB:08 in the body control module (BCM). This may be due to a loose fuse terminal for the 3 amp fuse in the battery positive fuse assembly. If this condition is present, compare fuse removal effort between the 3A fuse in the battery positive fuse assembly and like fuses in the under hood fuse box. If removal effort for the 3A fuse is low, replace the battery positive fuse assembly to correct this condition. Refer to Workshop Manual (WSM) Section 404-01 > Removal and Installation > Low Voltage High Current Fuse. For claiming, use causal part 14526 and M-time.

FORD · 2023-06-20

This article supersedes TSB 23-2135 to update the Part List. 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.

FORD · 2023-05-04

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.

JAGUAR · 2019-01-18

After the Gateway Module (GWM) is updated with the latest software (J9C3-14F642-AF), the Instrument Cluster (IPC) may display various errors in for the charging system. The charging system will become inoperative potentially causing the battery to become discharged and DTCs B12CD-87 or B11DB-87 may be logged within the GWM. This effects E-Pace X540, 18MY (up to VIN SADFA2BXXJ1Z33577)

JAGUAR · 2014-09-09

Diagnosing the BMS when DTC B11DB-87 is logged.

JAGUAR · 2014-09-09

"ISSUE: A SIGNIFICANT NUMBER OF BMS (BATTERY MONITORING SYSTEM) MODULES HAVE BEEN REPLACED WHEN DTC B11DB-87 IS LOGGED, WHEN RETURNED TO THE SUPPLIER FOR ANALYSIS MANY ARE DEEMED “NO FAULT FOUND” CAUSE: INCORRECT DIAGNOSIS"

LAND ROVER · 2014-02-25

Technical Bulletin: Battery Charge Warning Lamp On With DTC B11DB-87 stored Onwards

LAND ROVER · 2014-02-25

"SITUATION: THE BATTERY CHARGE WARNING LAMP MAY BE DISPLAYED IN THE INSTRUMENT CLUSTER WITH DIAGNOSTIC TROUBLE CODE (DTC) B11DB-87 STORED IN THE BODY CONTROL MODULE (BCM). CAUSE: THIS MAY BE CAUSED BY A BLOWN BATTERY MONITORING SYSTEM (BMS) FUSED HARNESS."