2021 Ford Bronco Technical Service Bulletins

324 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.

• 11005698Jul 9, 2024Other or unknown. Some 2021-2024 Bronco vehicles may require servicing of the interior door handle lock cable mounting bracket on the interior door handle. The interior door handle cable mounting bracket, base part number 78219A64 (right) and 78219A65 (left), are now available to service separately from the cables and latch mechanisms. It is no longer necessary to replace the complete latch assembly for a damaged interior door…
• 11005694Jul 9, 2024Other or unknown. Some 2021-2024 Bronco vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC)s P0096 and/or P007B stored in the powertrain control module (PCM) which may be more prevalent in high ambient air temperatures. For vehicles that meet this criteria, inspect the front of the vehicle for the presence of an aftermarket bumper and/or accessories which may restrict air flow to…
• 11003144Jun 27, 2024Other or unknown. Some 2021-2024 F-150/Bronco and 2023-2024 Escape/F-Super Duty vehicles built with SYNC 4 require a connected phone with Android Auto or Apple CarPlay active to enable voice interactions and use of the steering wheel voice control button. This is due to the affected vehicles not having built in voice interactions capability.
• 11001584Jun 7, 2024Body and structure. This article supersedes 24-2080 to add 2024 model year vehicles. Some 2021-2024 Bronco vehicles equipped with a factory soft top roof may exhibit a headliner that is detaching from the soft top material. This may be due to the factory installation process. To correct this condition, follow the Service Procedure to reattach the headliner or replace the soft top roof material.
• 11001112May 30, 2024Other or unknown. Some vehicles equipped with SYNC4 may exhibit one or more of the following symptoms after all currently available accessory protocol interface module (APIM) software updates have been performed. - General system performance, stability, and intermittent system reboots. - Intermittent Wireless CarPlay or Android Auto function. - Phone related concerns with intermittent No Audio or Static. - Navigation/global…
• 11000555May 21, 2024Body and structure. Some 2021-2024 Bronco vehicles 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. Inform customers that engineering is aware of this condition and is currently working on a solution which is expected in Q3 2024. Schedule a service visit for customers…
• 11000299May 21, 2024Body and structure. Some 2021-2024 Bronco vehicles equipped with a factory soft top roof may experience snow or sand accumulation on the vehicles interior during a strong storm with high winds. Inform customers that repair kits are currently on backorder and are expected to be available Q3 2024. Schedule a service visit for customers when the repair is available in Q3 2024. Monitor OASIS for additional information.
• 10254159Apr 24, 2024Transmission and drivetrain. Some 2021-2023 Bronco vehicles equipped with a 2.7L or 3.0L engine may exhibit an illuminated MIL with DTC P25B4, P25B6, and/or P0299 stored in the powertrain control module (PCM). This may be due to a loose nut on the turbo actuator arm causing an under boost condition
• 10254138Apr 24, 2024Equipment. All accessory stick-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory installed, this card will be placed in the glove box and should be handed to the vehicles owner during initial delivery. Unlike the integrated (wired) factory keypad, the accessory keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool. If the wallet…
• 10254136Apr 23, 2024Other or unknown. Some 2021-2024 Bronco vehicles may experience a repeat loss of window initialization which results in a loss of short drop and/or one-touch up and one-touch down feature operation. This may be due to a recent short drop enhancement that is contained in the driver door module (DDM) and passenger door module (PDM) software.
• 10254122Apr 15, 2024Engine cooling. Some 2020-2024 F-150 and 2021-2024 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit a ticking/tapping or rattle type noise from the top front cover area of the engine on initial start-up after a cold soak of 6 hours or more that may last for 2-5 seconds. This may be due to a stuck internal component of the variable cam timing (VCT) unit. To correct the condition, replace all 4 of the VCT…
• 10253890Apr 11, 2024Suspension. This article supersedes TSB 23-2400 to update the parts list. Some 2021-2023 Bronco vehicles may encounter a Sta-bar Disconnect Service Required message in the instrument panel cluster and an illuminated warning light with diagnostic trouble codes (DTCs) stored in the chassis control module (CHCM)
• 10254319Apr 9, 2024Electrical system. Quality improvements include: -Fix the infrequent random audio noises issue and improve the audio quality of the vehicle
• 10253552Apr 3, 2024Other or unknown. Various vehicles have had pinpoint tests, guided routines and the Warranty and Policy Manual recentlyupdated for diagnostics and repairs on SYNC generation 3 and later applications. When performingdiagnostics and repairs on SYNC Gen 3 or later, select the diagnostics tab and search for related symptoms,DTCs and keywords. The search results will be shown in the search results pane.
• 10252616Mar 25, 2024Electrical system. Some 2021-2023 Bronco vehicles equiped with a 2.7L engine may exhibit an ilumintated MIL with DTC P0456 stored in the powertrain control module (PCM). This may be due to the software level of the PCM and has no effect on vehicle operation.
• 10252558Mar 20, 2024Equipment, Body and structure. This article supersedes 23-2024 to update parts list to include rivets. Some 2021-2023 Bronco vehicles equipped with a factory soft top roof may exhibit a headliner that is detaching from the soft top material. This may be due to the factory installation process.
• 10252628Mar 14, 2024Body and structure, Electrical system. 2021-2023 Bronco vehicles built on or before 9-Jul-2023 may have new version software in their driver door module (DDM) and passenger door module (PDM) that contains noticeable enhancements to the window short drop operation. This software level can be identified in the DDM and PDM as Software Part Number MU5T-14C064-CR or later.
• 10251954Mar 7, 2024Transmission and drivetrain. Some 2022-2024 Broncos Raptors built on and before 13-Feb-2024 and 2021-2024 Broncos equipped with a 2.3L EcoBoost engine may exhibit an illuminated MIL with ignition system DTC(s) P0352, P0353, P0354, P0355, P0357, P2303, P2306, P2309, P2312, P2318, P2304, P2307, P2310, P2313, P2319, and/or P2322 set in the powertrain control module (PCM). This may be due to incorrect cylinder to DTC mapping within the PCM. This…
• 10251952Mar 6, 2024Engine cooling. For 2015-2024 Ford and Lincoln vehicles equipped with turbocharged engines and customer concern of an engine oil leak, refer to Workshop Manual (WSM), Section 303-00 for oil leak inspection and testing methods. Ford has evaluated turbochargers replaced for oil leak symptoms and although oil may collect on the external surface of a turbocharger, it is extremely rare for a turbocharger assembly to be the root cause…
• 10251947Mar 4, 2024Equipment. Some 2021-2024 Bronco/F-150, 2023-2024 Escape/F-Super Duty vehicles equipped with SYNC 4 may experience a concern during accessory protocol interface module (APIM) programming where the vehicle's center display screen indicates USB Error. This may be due to a lack of memory space available to perform the APIM software update. If it is a memory concern, the Ford Diagnosis and Repair System (FDRS) will provide an…
• 10251934Mar 1, 2024Transmission and drivetrain. During service and repair requiring removal and replacement of a crankshaft bolt and/or crankshaft damper, achieving proper torque of the crankshaft pulley bolt is critical. Incorrect torque may allow the bolt to loosen resulting in the timing gear breaking and engine damage. Replacement of the bolt is critical to the repair and accurately following the installation procedure in the Workshop Manual (WSM) Section…
• 10251466Feb 22, 2024Transmission and drivetrain. This article supersedes TSB 23-2019 to update the model years affected, add an additional labor operation, and correct the part number called out in the Service Procedure. Some 2021-2024 Bronco vehicles equipped with a MT88 manual transmission may experience a rotational scraping noise while the transmission is in neutral, 1st or 2nd gear with the clutch pedal released and may be more noticeable in ambient temps…
• 10250832Feb 21, 2024Transmission and drivetrain. Some 2021-2023 Bronco (non-Raptor) vehicles built on or before 09-Jul-2023 may exhibit a fluid leak from the front drive axle pinion seal. This may be due to operating the vehicle under high load. If leaking, replace the pinion seal following Workshop Manual (WSM) section 205-03A > Removal and Installation > Drive Pinion Flange and Seal.
• 10251465Feb 16, 2024Equipment. Some 2021-2024 Bronco vehicles may exhibit paint damage on the rear quarter panel due to contact with the soft top rear window. This may be due to a contact condition that can occur during extreme off-road driving between the soft top rear window and the rear quarter panel. To correct the condition, follow the Service Procedure to modify the rear window.
• 10250522Feb 13, 2024Electrical system, Latches, locks and linkages. Some 2021-2024 Bronco vehicles may exhibit a parasitic battery draw. This may be due to an interior door lock switch on the driver's and passenger's interior door panels. Prior to normal Workshop Manual (WSM) diagnostics, check both front door lock control switches for damage and/or proper operation. If a front door lock control switch does not operate as designed, repair as necessary. If no problems are found…
• 10251460Feb 5, 2024Body and structure, Equipment. Some 2021-2023 Bronco vehicles built on or before 28-Feb-2023 may exhibit water entry into the rear trunk. This may be due to a lack of body seam sealer at the floor panel to trunk sheet metal joint. This repair procedure addresses water entry from underneath of the vehicle into the rear trunk area (jack storage compartment). This article does not apply if water is entering the vehicle from above the rear trunk…
• 10249787Jan 24, 2024Equipment. This article supersedes TSB 23-2213 to revise Figure 1, add 2024 vehicles and the part list. Some 2021-2024 Bronco vehicles may exhibit a whistle noise below the lower left windshield area at the bottom of the A-pillar. This may be due to a missed body sealer application at the factory.
• 10249422Jan 23, 2024Other or unknown, Wheels, Transmission and drivetrain. Some 2021-2024 Bronco vehicles equipped with 4x4 with part time engagement and built on or before 12-Jan-2024 may exhibit a condition of the vehicle being stuck in neutral tow mode. This may be due to a concern with the all-wheel drive (AWD) module software. Make sure the proper procedure is being followed to exit neutral tow mode by referring to the Owner's Manual > Towing Your Vehicle > Recreationally Towing Your…
• 10249824Jan 22, 2024Electrical system. Software Update 23- PU0605-STBR-DSC for 2021 MY BRONCO vehicles is now available. Quality Improvements include: - Address incorrectly setting the Sta-Bar Disconnect DTC issue.
• 10248998Jan 15, 2024Body and structure, Other or unknown, Engine. Some 2021-2024 Bronco vehicles may exhibit a rattle from the front windows with the windows placed in the partially down position and driving over rough roads and/or bumps. This condition is currently under investigation and repairs and/or component replacement is not expected to reduce the rattle. Inform customers that they can continue to drive the vehicle and that engineering is currently developing a solution…
• 10248991Jan 9, 2024Other or unknown, Engine cooling. Some 2021-2024 Bronco vehicles equipped with SYNC 4 may experience a concern during SYNC module (APIM) programming where the vehicle's center display screen indicates: USB Error. This may be due to a lack of memory space available to perform the APIM software update. If it is a memory concern, the Ford Diagnosis and Repair System (FDRS) will provide an option to delete the voice application.
• 10249753Jan 8, 2024Electrical system. This article supersedes 23-2105 to update the vehicle model years affected and customer symptoms. Some 2021-2023 Bronco vehicles may experience at least one of the following symptoms: intermittent blank/frozen center display screen that resets automatically, Android Auto Apple Carplay connectivity, checkerboard display, center display screen reset and/or Bluetooth connectivity. This may be due to the software in…
• 10248362Dec 11, 2023Transmission and drivetrain. This article supersedes TSB 23-2219 to update the Parts List. Some 2021-2023 Bronco vehicles may exhibit no 3rd gear engagement and/or a grinding noise going into 3rd and/or 4th gear. This may be due to the transmission shifting system and clutch interaction such as a lack of full clutch disengagement during shifts and/or placing weight upon the gear shift lever while driving.
• 10248359Dec 6, 2023Electrical system. This article supersedes TSB 23-2086 to update the parts list. Some 2021-2023 Bronco vehicles may encounter a Sta-bar Disconnect Service Required message in the instrument panel cluster 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. To correct the condition, follow the Service…
• 10246151Nov 23, 2023Electrical system. 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).
• 10246134Nov 21, 2023Equipment. This article supersedes TSB 23-2163 to update the Parts List. Some 2021-2022 Bronco vehicles built on or before 25-Jul-2022 may exhibit a rattle noise from the tailgate when driving on rough roads. The rattle may diminish with the spare tire removed. This may be due to the design of the tailgate and tailgate hinges. To correct this condition, follow the Service Procedure to replace the tailgate and the upper and…
• 10246125Nov 14, 2023Transmission and drivetrain. Some 2020-2023 Explorer/Aviator and 2021-2023 Bronco vehicles equipped with a 10R60 transmission may exhibit a harsh/delayed engagement and/or harsh/delayed shift, an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes stored in the powertrain control module (PCM) or transmission control module (TCM).
• 10245357Nov 14, 2023Equipment. Some 2021-2023 Ford and Lincoln vehicles equipped with SYNC 4 may exhibit the navigation feature in the center display screen only displaying imperial (feet and miles) units and not being able to change to metric (meters and kilometers) units. This may be due to the software level of the SYNC module (APIM). To correct this condition, follow the Service Procedure to update the APIM to the latest software level via a…
• 10246357Nov 7, 2023Equipment. Some 2021 Bronco vehicles built on or before 01-Sep-2021 equipped with a factory soft top roof may not have the hard top roof prep kit. The prep kit includes the controls, wiring, hoses and module configurations required to have a functional rear wiper, washer and defroster. Without the prep kit installed from the factory, the rear wiper, washer and defroster, will not function.
• 10245175Nov 2, 2023Transmission and drivetrain, Other or unknown, Electrical system. Some 2021-2023 Bronco vehicles equipped with 4x4 with part time engagement may exhibit a condition of the vehicle being stuck in neutral tow mode. This may be due to a concern with the all-wheel drive (AWD) module. Make sure the proper procedure is being followed to exit neutral tow mode by referring to the Owner's Manual > Towing Your Vehicle > Recreationally Towing Your Vehicle.
• 10246066Nov 1, 2023Visibility (wipers, defrost, mirrors). Certain 2021-2023 Model Year Bronco Vehicles - Wiper Motor Software Update
• 10244802Oct 31, 2023Equipment. This article supersedes TSB 22-2146 to update the parts list. Some 2021-2022 Bronco vehicles equipped with a soft top roof may experience paint scratches on the sports tube paint due to contact with the soft top roof frame during the open and close operation. This may be due to a lack of protective measures installed on the soft top roof frame. To correct this condition, follow the Service Procedure to install…
• 10244657Oct 17, 2023Equipment. Some 2021-2022 Bronco vehicles built on or before 31-Mar-2022 and equipped with a factory hard top roof may have an older style latch decal installed that is no longer available to order. Replacement hard top roof panels will come with a newer style latch decal. This will create an appearance mismatch condition with the original roof panels that will still have the older style decals installed.
• 10244850Oct 13, 2023Electrical system. 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…
• 10244824Oct 3, 2023Transmission and drivetrain, Engine cooling. Some 2021-2023 Bronco vehicles may exhibit an illuminated MIL with DTCs P0096 and/or P007B in the powertrain control module (PCM), which may be more prevalent in high ambient air temperatures. For vehicles that meet this criateria, inspect the front of the vehicle for the presence of an aftermarket bumper and/or accessories which may restrict air flow to the charge air cooler and surrounding sensors. Remove the…
• 10243648Sep 21, 2023Transmission and drivetrain. Some 2017-2023 Ford and Lincoln vehicles equipped with a 10R60/10R80/10R80 MHT/10R100 transmission may exhibit a whine noise at idle and/or while driving. This may be identified as coming from the bellhousing and the front of the transmission fluid pan. The whine noise may become louder when the transmission is at operating temperature and may increase with engine revolutions per minute (RPM) in the park (P)…
• 10242848Sep 1, 2023Transmission and drivetrain. Some 2021-2023 Bronco vehicles may exhibit no 3rd gear engagement and/or a grinding noise going into 3rd and/or 4th gear. This may be due to the transmission shifting system and clutch interaction such as a lack of full clutch disengagement during shifts and/or placing weight upon the gear shift lever while driving. To correct this condition, follow the Service Procedure to replace the 3rd and/or 4th gears and/or…
• 10242847Sep 1, 2023Electrical system. This article supersedes TSB 23-2006 to update the vehicle model years affected. Some 2021-2023 Bronco vehicles may encounter a Sta-bar Disconnect Service Required message in the instrument panel cluster 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. To correct the condition…
• 10241594Aug 15, 2023Electrical system, Electronic stability control, Suspension. During replacement of the electronic front stabilizer bar disconnect assembly on 2021-2023 Bronco vehicles, removal and replacement of the sta-bar harness is required. To assist engineering with root cause analysis of failed sta-bar disconnect assemblies, include the sta-bar harness with the part in the same package when returning warranty replacement sta-bar disconnect assembly.
• 10241447Aug 14, 2023Transmission and drivetrain. This article supersedes TSB 22-2428 and 23-2176 to update the Issue, Action and Service Procedure. Some 2017-2023 F-150, 2018-2023 Expedition/Navigator/Mustang, 2019-2023 Ranger, 2020-2023 Explorer/Aviator/Transit and 2021-2023 Bronco vehicles equipped with a 10R60/10R80/10R80MHT transmission may exhibit a harsh/delayed engagement and/or harsh/delayed shift, an illuminated malfunction indicator lamp (MIL) with…

← All problems reported for the 2021 Ford Bronco