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Service bulletins for the 2021 Ford Bronco

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.

322 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
SSM 552402026-10-13. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER; SERVICE BRAKES. Some 2021-2024 Bronco vehicles may exhibit an illuminated red brake warning indicator with diagnostic trouble code (DTC) C0049:01 stored in the anti-lock brake system (ABS) module. This may be due to pin fitment at the brake fluid level sensor connector. To resolve this concern, replace the brake fluid reservoir and replace the brake fluid level sensor electrical connector C1052 with service pigtail wiring kit 3U2Z-14S411-BXAB. For claiming, use causal part 2L210 and labor operations 2140A and 2219D45WR.
TSB 26-23802026-09-29. Service bulletin. SUSPENSION; ELECTRICAL SYSTEM; STRUCTURE:BODY; UNKNOWN OR OTHER. This article supersedes TSB 25-2575 to update the Parts list to add the applicable body wiring harnesses and underbody shield bolts. Some vehicles listed in the Model statement above may exhibit a "Sta-bar Disconnect Service Required" message in the instrument panel cluster (IPC) with any of the following diagnostic trouble codes (DTCs) stored in the chassis control module (CHCM): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. This may be due to water intrusion in the stabilizer bar wiring harness connector.
PCM-26.2.11.4 Bronco2026-09-14. Over-the-air update. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to the engine.
PCM-26.2.11.3 Bronco2026-09-14. Over-the-air update. ELECTRICAL SYSTEM; UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM. 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to the engine.
PCM-26.11.5 Bronco2026-09-14. Over-the-air update. UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to the engine.
26E042026-08-03. Emissions. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. NEW VEHICLE DELIVERY HOLD - Emissions Recall 26E04 Certain 2021-2025 Model Year F-150, Maverick, Mustang, Ranger, Expedition, Bronco Sport, Explorer, Bronco, Navigator, and Aviator Vehicles Powertrain Control Module Software Update
SSM 550312026-07-28. Service bulletin. UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. Some 2021-2026 Ford/Lincoln vehicles may exhibit various symptoms including but not limited to the auto start/stop system not operating as intended with a "Check Charging System" message in the instrument panel cluster (IPC) while the charging system is operating properly with no charging related diagnostic trouble codes (DTC) stored. This may be due to someone using an aftermarket programmer to change the body control module (BCM) configuration to disable the auto start/stop system or perform other unsupported programming modifications. To correct this condition on F-150 and Bronco vehicles, download and run the Ford Diagnosis and Repair System (FDRS) application titled "BCM-Charging System Configuration Correction". Running this application will determine if the BCM configuration was modified by the customer and if so, provide the option to return the configuration back to factory settings. For other vehicle models exhibiting concerns related to unsupported aftermarket BCM programming, submit a Technical Support Request (TSR) requesting support to revert the BCM configuration
SSM 550282026-07-28. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some 2021-2024 Ford and Lincoln vehicles may exhibit an "Updating SYNC" message on the vehicle center display screen after an over the air (OTA) update. The message can be cleared from the center display screen and SYNC can be used normally, but it will re-appear at every subsequent ignition cycle. Inform customers that engineering is currently working on a software update solution for this condition to be delivered OTA expected in late Q3 2026. Software will update automatically if vehicle connectivity is enabled in the vehicles settings. Monitor Professional Technician System (PTS) for additional information.
SSM 550092026-07-20. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. Some 2021-2026 Bronco vehicles may exhibit a "Park Brake Limited Function Service Required" message in the instrument panel cluster (IPC). This may be due to an issue with the driver door harness connector after removing and installing the removeable doors. If diagnostic trouble code (DTC) B1625:29 is stored in the driver door module (DDM), inspect connector C322C between the upper and lower door hinges that attaches to the body for proper installation and/or pin fitment. Repair as necessary. If the condition was caused by improper door installation, do not submit a claim for this condition. If no concerns are found with the connector, refer to Workshop Manual (WSM), Section 501-11 > Diagnosis and Testing for normal diagnostics.
SSM 549612026-06-29. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER. Some 2021-2023 Bronco vehicles may exhibit a condition where short drop windows, window bounce-back, and/or one-touch close does not operate properly. This may be due to loss of window initialization. Replacement or reprogramming of the DDM, PDM, and/or any other components may not resolve these conditions.The short drop windows feature may be restored by performing a reset procedure as described in the Digital Owner's Manual > Windows > Using Short Drop Windows > Resetting Short Drop Windows. If the customer is experiencing an inability to fully close the window due to repeated bounce-back events, the window bounce-back feature may be overridden by performing an override procedure as described in the Digital Owner's Manual > Windows > Window Bounce-Back > Overriding Windows Bounce-Back. The one-touch feature may be restored by performing a reset procedure as described in the Digital Owner's Manual > Windows > Opening and Closing the Windows > Resetting One-Touch Close. These symptoms may return after a successful reset/override of the feature. Show the customer where they can find these procedures in the Digital Owner’s Manual so they can have the option to perform the procedures on their own should any of these symptoms return. Inform customers that engineering is aware of these conditions and working on a solution which is expected to be available by the end of Q4 2026. Monitor Professional Technician System (PTS) for additional information.
TSB 26-22972026-06-29. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Some of the vehicles listed in the model statement above equipped with SYNC4 may experience a blank center display screen or black center display after welcome animation. The rear-view camera will still function when shifting the vehicle to reverse under these conditions.
TCU-26.2.11.3 Bronco2026-06-19. Over-the-air update. ELECTRICAL SYSTEM. Quality improvements include: - Telematics Control Unit update to enhance connected features
SYNC-26.2.8.3 Bronco2026-06-19. Over-the-air update. ELECTRICAL SYSTEM. Quality improvements include: -Privacy robustness updates -Resolves various user interface and data display bugs within the Towing menu
ECG-26.2.11.4.1 Bronco2026-06-12. Over-the-air update. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Quality improvements include: - Enhanced system performance, disk usage limits and memory monitoring
SYNC-25.1.9.7.1 Bronco2026-05-01. Over-the-air update. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. 25S49 Recall Remedy: -Infotainment software update to address frozen screens
SYNC-26.2.1.6.5.3 Bronco2026-04-28. Over-the-air update. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. 26S09 Recall Remedy -Update to enable rearview camera image to display when in reverse after infotainment screen thermal shutdown
SSM 547202026-04-10. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE: BLIND SPOT DETECTION. Various 2020-2026 Ford and Lincoln vehicles equipped with blind spot information system (BLIS) may experience an inoperative blind spot monitoring with a "Blind Spot System Fault" message displayed in the instrument panel cluster (IPC). This may also be accompanied by diagnostic trouble codes (DTCs) B118C:11 and/or B118C:15 stored in the driver door module (DDM), and/or B118D:11 and/or B118D:15 stored in the passenger door module (PDM). This may be due to the wiring connector from the mirror to the BLIS module. If diagnostics lead to an internal mirror wiring harness fault, a new lower level BLIS light pigtail is now released for service. It is not necessary to replace the exterior mirror assembly. Use part number SC3Z-14A411-B to resolve the concern.
PCM-24.11.03 Bronco2026-04-06. Over-the-air update. ELECTRICAL SYSTEM; POWER TRAIN; UNKNOWN OR OTHER. "Quality improvements include: - Optimizes cabin ventilation strategy at high speeds"
SYNC-25.1.7.10.1 Bronco2026-04-02. Over-the-air update. UNKNOWN OR OTHER; VISIBILITY/WIPER; ELECTRICAL SYSTEM. "25S49 Recall Remedy: -Infotainment software update to address frozen screens"
SSM 546292026-03-11. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 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.
SSM 546012026-02-27. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY; UNKNOWN OR OTHER. Ford and Lincoln vehicles equipped with wired keyless entry keypad systems and accessory wireless keyless entry keypad systems may or may not come with a wallet card containing the master code. Unlike the integrated wired keypad, the accessory wireless keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool or from the label printed on the body control module (BCM). The Factory Keyless Entry Code application within the diagnostic scan tool will not provide an applicable master code for the accessory wireless keypad. If the wallet card for an accessory keypad is not available, the "Wireless RF Keypad Diagnosis Guide" can be referenced and provides direction on how to retrieve the master code. This guide is located under the Workshop Manual tab > Accessories > Installation > Wireless RF Keypad Diagnosis Guide > PPT C > Step C2.<br /><br /> Note: The only available keypad for some vehicles from the assembly plant is the accessory wireless keyless entry keypad. The integrated wired keypad cannot be installed on vehicles not equipped from the factory with a wired keyless entry k
SYNC-25.2.1.6.5.2 Bronco2026-02-25. Over-the-air update. ELECTRICAL SYSTEM; UNKNOWN OR OTHER; VISIBILITY/WIPER. Quality Improvements Include: - Bug Fixing and Feature improvements. - Resolves black screen issue caused when there is no SiriusXM disk space.
TSB 25-25752025-12-02. Service bulletin. SUSPENSION; ELECTRICAL SYSTEM. This article supersedes TSB 24-2104 to update the vehicle model years affected. Some vehicles listed in the Model statement above may exhibit a "Sta-bar Disconnect Service Required" message in the instrument panel cluster (IPC) and an illuminated warning light with any of the following diagnostic trouble codes (DTCs) stored in the chassis control module (CHCM): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. This may be due to water intrusion in the stabilizer bar wiring harness connector.
SSM 543622025-11-12. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some 2021-2025 Bronco vehicles may exhibit an illuminated red brake warning indicator with diagnostic trouble code (DTC) C0049:01 stored in the anti-lock brake system (ABS) module. Replace the brake fluid reservoir and the brake fluid level sensor electrical connector. Do not disconnect the brake fluid level sensor electrical connector, cut the connector 3-4 inches (75-100 mm) from the connector end and leave the brake fluid level sensor electrical connector attached to brake fluid reservoir. Include these parts in the same package when returning warranty replacement brake fluid reservoirs. The brake fluid reservoir with the electrical connector still connected should be packaged in the original box to protect it during shipping. For claiming, use causal part 2L210 and labor operations 2140A and 2219D45WR.
SSM 543132025-10-28. Service bulletin. LANE DEPARTURE: BLIND SPOT DETECTION; ELECTRICAL SYSTEM. Some 2020-2025 various Ford and Lincoln vehicles equipped with blind spot information system (BLIS) may experience an inoperative blind spot monitoring with a "Blind Spot System Fault" message displayed in the instrument panel cluster (IPC). This may also be accompanied by diagnostic trouble codes (DTCs) B118C:11 and/or B118C:15 stored in the driver door module (DDM), and/or B118D:11 and/or B118D:15 stored in the passenger door module (PDM). This may be due to the wiring connector from the mirror to the BLIS module. If diagnostics lead to an internal mirror wiring harness fault, a new lower level BLIS light pigtail is now released for service. It is not necessary to replace the exterior mirror assembly. Use part number SC3Z-14A411-B to resolve the concern.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.