2021 Ford Bronco Technical Service Bulletins

323 technical service bulletins (TSBs) are on record for the 2021 Ford Bronco. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11038697Oct 27, 2026Other or unknown, Transmission and drivetrain. Some 2021-2023 Bronco vehicles equipped with a MT88 manual transmission may exhibit no 3rd gear engagement and/or a grinding noise going into 3rd and/or 4th gear. This may be due to the 3rd/4th gear shift fork.
• 11038617Oct 14, 2026Other or unknown, Electrical system. This bulletin supersedes 26-2297. Reason for update: Add 2022-2025 Transit vehicles. Some of the vehicles listed in the model statement above equipped with SYNC4 may experience a blank center display screen or black center display screen after welcome animation. The rear-view camera will still function when shifting the vehicle to reverse under these conditions.
• 11038445Oct 12, 2026Electrical system, Brakes, Other or unknown. 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…
• 11038440Oct 8, 2026Other or unknown, Engine. Some 2020-2026 Aviator/Explorer/F-150/Bronco/Ranger vehicles equipped with a 2.7L or 3.0L (non-diesel) engine may need the front engine cover removed and reinstalled for various reasons.
• 11037537Sep 24, 2026Body and structure, Other or unknown, Electrical system, Suspension. 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…
• 11037308Sep 9, 2026Other or unknown, Electrical system, Fuel 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.
• 11037309Sep 4, 2026Fuel system, Electrical system, Other or unknown. 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to the engine.
• 11037307Sep 4, 2026Fuel system, Other or unknown, 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.
• 11036530Aug 22, 2026Seats, Other or unknown. For Various Ford and Lincoln vehicles, if diagnostics lead to the replacement of the front seat cushion cover J-clips, lower-level service parts are now available. Use service part W709919-S901 if the J-clip is completely detached from the seat cover and W715386-S424 if the clip is still partially attached. It is not necessary to replace the seat cover if only the J-clip is separating from the cover.
• 11036108Aug 10, 2026Transmission and drivetrain, Other or unknown. Some 2021-2026 Bronco vehicles may require the removal and installation of the transfer case for various reasons. Installation requires Loctite® 243 adhesive applied to the mounting bolt threads in the transmission. Make sure that the mating faces are clean and dry. Tightening the mounting bolts also requires an updated two-stage tightening sequence. Workshop Manual (WSM), Sections 307-07C/D and 308-07C/D…
• 11035269Jul 23, 2026Other or unknown, Electrical system, Fuel 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.
• 11035267Jul 21, 2026Electrical system, Other or unknown. 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…
• 11035101Jul 14, 2026Electrical system, Body and structure. 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…
• 11035465Jul 9, 2026Electrical system, Other or unknown. 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
• 11034123Jun 26, 2026Other or unknown, Body and structure, Visibility (wipers, defrost, mirrors). This article supersedes 25-2551. Reason for update: to correct the descriptions for the liftgate glass weather seals. Some of the vehicles listed in the model statement above may exhibit paint wearing along on the top inner edge of the tailgate where the rear window weather strip contacts the tailgate. This may be due to the accumulation of dirt between the rear window seal and tailgate.
• 11034134Jun 24, 2026Other or unknown, 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.
• 11034139Jun 23, 2026Visibility (wipers, defrost, mirrors), Electrical system. 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…
• 11034015Jun 19, 2026Other or unknown, Transmission and drivetrain. This bulletin supersedes 26-2006. Reason for update: update the Parts list to correct the ambient air temperature service part number. Some vehicles listed in the model statement above may require the replacement of the ambient air temperature sensor for various concerns. DTCs P0071, P0072, and/or P0073 may be present in the powertrain control module (PCM).
• 11034006Jun 17, 2026Electrical system. Quality improvements include: -Privacy robustness updates -Resolves various user interface and data display bugs within the Towing menu
• 11034008Jun 15, 2026Electrical system. Quality improvements include: - Telematics Control Unit update to enhance connected features
• 11033775Jun 5, 2026Transmission and drivetrain. For 20202026 vehicles equipped with the 10R60 transmission, a new Transmission Clutch Circuit Leak Test has been introduced in the Ford Diagnosis and Repair System (FDRS). This test utilizes the pressure and vacuum transducer (PVT) when available. Workshop Manual (WSM) updates related to this diagnostic procedure are planned for release in Q4 2026. The new test improves the accuracy of detecting leaks within…
• 11033808Jun 4, 2026Electrical system, Other or unknown. Quality improvements include: - Enhanced system performance, disk usage limits and memory monitoring
• 11032924May 21, 2026Fuel system. 2020-2026 Explorer/Escape/Corsair, 2021-2026 Bronco Sport/Bronco, 2022-2026 Maverick, 2024-2026 Mustang/Ranger/Nautilus vehicles equipped with a 2.0L or 2.3L EcoBoost engine may require removal of the turbocharger wastegate control actuator linkage for various reasons. The Workshop Manual (WSM), Section 303-04 Fuel Charging and Controls - Turbocharger - 2.0L/2.3L EcoBoost > Removal and Installation > Wastegate…
• 11032752May 12, 2026Transmission and drivetrain. Some 2021-2024 Bronco vehicles equipped with a manual transmission may experience a rotational scraping noise while the transmission is in neutral, 1st and/or 2nd gear with the clutch pedal released. The noise may be more noticeable in ambient temps below 10°C (50°F) and after a cold soak. This noise may also diminish as the transmission warms up. This may be due to the 5th and 6th gear synchronizer rings.
• 11033577May 9, 2026Engine. Certain 2021-2024 Model Year Bronco, 2021-2024 Model Year Bronco Sport, 2020-2022 Model Year Corsair and Escape, 2016-2024 Model Year Explorer, 2019-2020 Model Year Fusion, 2016-2018 Model Year Focus RS, 2022-2024 Model Year Maverick, 2016-2019 Model Year MKC and 2019-2024 Model Year Ranger Vehicles Equipped with a 2.0L or 2.3L Engine and Engine Block Heater System Block Heater Replacement
• 11032713May 8, 2026Other or unknown, Engine, Transmission and drivetrain. Quality improvements include: - Optimizes cabin ventilation strategy at high speeds
• 11031929Apr 29, 2026Other or unknown, Electrical system. 25S49 Recall Remedy: -Infotainment software update to address frozen screens
• 11031638Apr 27, 2026Transmission and drivetrain. Some 2021-2025 Bronco vehicles built on or before 09-Sep-2025 may require replacement of the ambient air temperature sensor for various concerns. Diagnostic trouble codes (DTC) P0071, P0072, and/or P0073 may be present in the powertrain control module (PCM). A concern has been identified in TSB 26-2006 that previously instructed replacement of the incorrect ambient air temperature sensor for the vehicle…
• 11031487Apr 17, 2026Transmission and drivetrain, Other or unknown. Some vehicles listed in the model statement above may require the replacement of the ambient air temperature sensor for various concerns. DTCs P0071, P0072, and/or P0073 may be present in the powertrain control module (PCM).
• 11031652Apr 15, 2026Electrical system, Other or unknown. 26S09 Recall Remedy -Update to enable rearview camera image to display when in reverse after infotainment screen thermal shutdown
• 11031263Apr 2, 2026Electrical system, Lane departure. 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…
• 11030911Mar 31, 2026Engine. Certain 2021 - 2022 Model Year Various Vehicles Engine Valve Inspection Test This submission includes : Technical Instructions Updated wording and description with additional photo.
• 11030729Mar 30, 2026Transmission and drivetrain, Other or unknown, Electrical system. "Quality improvements include: - Optimizes cabin ventilation strategy at high speeds"
• 11030662Mar 26, 2026Transmission and drivetrain, Other or unknown. "Quality improvements include: - Optimizes cabin ventilation strategy at high speeds"
• 11030282Mar 25, 2026Other or unknown, Back-over prevention (rear camera), Lane departure. Advance Notice – Customer Satisfaction Program 25N17 Certain 2015-2025 Model Year Multiple Vehicle Lines Rear View Camera Replacement If Required After Dealer Evaluation
• 11030659Mar 24, 2026Other or unknown, Transmission and drivetrain. "Quality improvements include: - Optimizes cabin ventilation strategy at high speeds"
• 11030471Mar 6, 2026Other or unknown, Visibility (wipers, defrost, mirrors), Electrical system. "25S49 Recall Remedy: -Infotainment software update to address frozen screens"
• 11029929Mar 4, 2026Electrical system, Transmission and drivetrain. 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).
• 11029052Feb 24, 2026Other or unknown, Electrical system, Body and structure. 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).
• 11029081Feb 17, 2026Transmission and drivetrain. For 20172026 vehicles equipped with a 10R transmission, a revision to the Road Testing Vehicle procedure has been made in the WSM, located in Section 307-01 > Diagnosis and Testing. This updated procedure improves the diagnosis of customer reported transmission concerns and aids in locating the proper root cause.
• 11029001Feb 4, 2026Visibility (wipers, defrost, mirrors), Electrical system, Other or unknown. Quality Improvements Include: - Bug Fixing and Feature improvements. - Resolves black screen issue caused when there is no SiriusXM disk space.
• 11027610Jan 8, 2026Other or unknown. This article supersedes 24-2387 to update the Parts List, Service Procedure enhancements, and labor operation allowances in place of M-time. Some of the vehicles listed in the Model statement above equipped with a factory subwoofer may exhibit a rattle from right loadspace trim panel at high audio system volumes. This may be due to lose and/or broken attachments.
• 11027609Jan 8, 2026Other or unknown, Suspension. This article supersedes TSB 24-2408 to update the parts list. Some of the vehicles listed in the Model statement above may exhibit a loud front end clink/clunk noise that leads to the identification of a cracked or broken front differential frame mount bracket. This may be due to flexing of the front differential from driving in 4L for extended periods of time.
• 11026520Dec 6, 2025Brakes. 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. 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…
• 11026928Dec 2, 2025Other or unknown. Special Field Action 25L02 Certain 2017-2024 Model Year California Emissions-Certified Vehicles Transmission Control Assembly Reimbursement
• 11025876Nov 28, 2025Suspension, 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…
• 11025827Nov 18, 2025Body and structure. Some of the vehicles listed in the model statement above may exhibit paint wearing along on the top inner edge of the tailgate where the rear window weather strip contacts the tailgate. This may be due to the accumulation of dirt between the rear window seal and tailgate.
• 11025491Nov 10, 2025Electrical system, Other or unknown, Brakes. 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…
• 11024526Oct 21, 2025Electrical system, Lane departure. 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…
• 11024271Oct 7, 2025Engine. Some 2021-2023 Explorer vehicles equipped with a 3.0L EcoBoost engine, 2021-2023 Aviator vehicles equipped with a 3.0L EcoBoost or 3.0L plug-in hybrid electric vehicle (PHEV) engine, 2021-2023 Edge/Nautilus vehicles equipped with a 2.7L EcoBoost, 2021-2024 F-150 vehicles equipped with a 2.7L EcoBoost, and 2021-2024 Bronco and 2024 Ranger vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit a…

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