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
| TSB 22-2218 | 2022-02-04. Service bulletin. EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Some 2021 Broncos may exhibit a whistle noise coming from the front center of the vehicle and/or the climate control housing. This may be due to the sealing on the climate control case. To correct the condition, follow the Service Procedure to apply butyl tape to cover small holes in the fresh air inlet door. |
|---|---|
| TSB 21-2456 | 2022-01-01. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE. Some 2021 Bronco vehicles equipped with exterior zone lighting may experience the hazard lamps flashing one time intermittently when the hazard lamps are turned off. This condition is due to the body control module (BCM) software. This condition occurs when zone lighting is activated then deactivated while the engine is OFF, or during an engine auto-start-stop event. To correct this condition, follow the Service Procedure to reprogram the BCM. |
| TSB 21-2454 | 2022-01-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some 2021 Bronco Badlands and First Edition vehicles built on or before 19-Nov-2021 with a stabilizer bar disconnect system may exhibit an illuminated red and/or amber stabilizer bar disconnect indicator and diagnostic trouble codes (DTC) C103A:74, C1B03:67 and/or C1B07:67 stored in the chassis control module(CHCM). This may be due to the software in the CHCM. To correct the condition, follow the Service Procedure to reprogram the CHCM. |
| SSM 50329 | 2021-12-26. Service bulletin. POWER TRAIN. Some 2021 Bronco/F-150/Explorer/Aviator/Police Interceptor Utility vehicles, non-hybrid, may exhibit harsh/delayed engagement and/or harsh/delayed shift concerns. These may be addressed with the powertrain control module (PCM)/transmission control module (TCM) Transmission Accelerated Main Control Break In Routine. Refer to Workshop Manual (WSM), Section 307-01, DTC Chart and/or Diagnosis By Symptom to identify the clutch(s) to be cycled. Cycling the shift solenoids and clutch control valves to remove contamination must be performed along with an adaptive drive cycle before attempting repair. This routine's usage has been expanded for various symptoms across the life of the vehicle. For claiming, use causal part 7A100 and applicable labor operations in Section 7 of the Service Labor Time Standards (SLTS) Manual. |
| SSM 50314 | 2021-12-07. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. Some 2021 Bronco vehicles equipped with the 2.3L engine may exhibit a red brake warning lamp and/or brake system warning message in the instrument panel cluster (IPC) with a diagnostic trouble code (DTC) P050F in the anti-lock brake system (ABS) module and a firm brake pedal. This may be due to contamination in a brake booster vacuum line. To correct this condition, replace the vehicle's vacuum hose (MB3Z-2420-A). Refer to Workshop Manual (WSM), Section 206-09 for installation instructions. For claiming, use casual part 2420. |
| SSM 50306 | 2021-12-07. Service bulletin. ENGINE AND ENGINE COOLING. Some 2018-2021 EcoSport, Expedition, Navigator; 2019-2021 Ranger; 2020-2021 Escape, Corsair, Explorer, Transit; 2021 Bronco, Bronco Sport, Edge, Nautilus, F-150, Mustang; 2019-2022 Transit Connect; 2020-2022 Aviator, F-Super Duty; and 2022 Maverick vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P0496, P0456, P0455, P04F0, and/or P0451. Ford has tested returned EVAP canister purge valves and found them to be fully functional. Prior to replacing the canister purge valve or other EVAP components, perform the following tests using the Ford Diagnosis and Repair System (FDRS) Scan Tool: Full System EVAP Leak Test - FDRS Location: TOOLBOX > PCM > PCM - Evap Emissions System Test and the EVAP Purge Valve Leak Test - FDRS Location: TOOLBOX > PCM > Evap Emission System Toolbox > CPV Check. |
| SSM 50296 | 2021-12-07. Service bulletin. SERVICE BRAKES. Some 2021 Ranger and Bronco vehicles built on 15-Jun-2021 and through 15-Aug-2021 may exhibit an illuminated anti-lock brake system (ABS) warning indicator lamp with diagnostic trouble codes (DTC) C003A, C0036, C0037, and/or C0039 stored in the ABS control module. This may be due to damage or movement of the ABS tone ring on the rear axle. Remove the ABS sensor and inspect the rear ABS tone ring for damage or movement from its original position. If movement or damage has occurred, refer to Workshop Manual (WSM), Section 205-02 to complete the service procedure for axle shaft replacement. If no movement has occurred, refer to WSM, Section 206-09 for normal diagnostics. |
| SSM 50272 | 2021-12-07. Service bulletin. UNKNOWN OR OTHER; COMMUNICATION:MANUFACTURER TELEMATICS; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE. Some 2021 Bronco, Edge/Nautilus customers may be unable to authorize the FordPass/LincolnWay app and the Enable Connected Services prompt is not showing in the SYNC screen with no diagnostic trouble codes (DTC) present in the telematics control unit (TCU) or the gateway module A (GWM). Before any repair attempts, try to authorize the vehicle via FordPass/LincolnWay app in order to verify the concern is still present. If the concern is present, make sure the GWM is at the latest software level. Start a new FDRS session and make sure the TCU is at the latest software level. If no software updates are available, remove the TCU and GWM fuses to reset the modules. Make sure the customer is able to authorize the vehicle from FordPass/LincolnWay to confirm the repair. If the concern is still present, follow normal diagnostics in Workshop Manual (WSM), Section 415-00. |
| SSM 50271 | 2021-12-07. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; UNKNOWN OR OTHER. Some 2021 F-150/Mustang Mach-E/Bronco/Edge/Nautilus customers may experience an inoperative FordPass/LincolnWay app, features in FordPass/LincolnWay are not functioning and/or the customer cannot pair the FordPass/LincolnWay mobile app to the vehicle. If the telematics control unit (TCU) on the vehicle does not exhibit any diagnostic trouble codes (DTC), but the customer is running into these app concerns, this may be due to poor cell signal getting to the TCU. The TCU - Provisioning Application on the Ford Diagnosis and Repair System (FDRS) scan tool will provide cell signal strength information that can help to diagnose the source of the poor cell signal. If poor cell signal is found, refer to WSM 415-00 to help identify an antenna concern. Be sure the vehicle is an open environment. |
| 4WP.09.17.21 DN | 2021-12-03. Service bulletin. STRUCTURE:BODY:BUMPERS; EQUIPMENT. Dealer notification executed in conjunction with manufacturer communication 4WP.09.17.21 |
| TSB 21-2403 | 2021-12-01. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS; VISIBILITY:WINDSHIELD. Some 2021 Bronco vehicles may experience a water leak that originates from the left and/or right A-pillars and/or the windshield header. This may be due to excessive gaps in the body seams from the factory. To correct the condition, follow the Service Procedure to reseal the affected body gaps and replace the front header seal. |
| 21B49-S1 | 2021-11-02. Service bulletin. EQUIPMENT; STRUCTURE:BODY:ROOF AND PILLARS; EQUIPMENT ADAPTIVE/MOBILITY. Certain 2021 Model Year Bronco Vehicles Equipped with a Hard Top Roof Roof Panel Delamination REASON FOR THIS SUPPLEMENT Technical Information - Dealership: Updated with revised directions regarding hard top panels and rear cap assembly disablement and photo submission requirement. As a result, the Labor Allowances have also been updated. |
| TSB 21-2366 | 2021-11-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Some 2021 Bronco vehicles equipped with a 2.7L EcoBoost engine and built on or before 01-Sep-2021 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P2096 and/or P2098 stored in the powertrain control module (PCM). This may be due to various software parameters within the PCM and/or a catalyst monitor sensor. To correct the condition, follow the Service Procedure to reprogram the PCM. |
| TSB 21-2354 | 2021-11-02. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2021 Bronco vehicles built on or before 23-Aug-2021 may experience a charging system fault message displayed in the instrument panel cluster (IPC) and diagnostic trouble codes (DTC) U012D, U0284 and/or U0285 stored in the powertrain control module (PCM). This may be due to water intrusion in the active grille shutter connector. To correct this condition, follow the Service Procedure to inspect for water intrusion in the active grille shutter harness connector and repair as needed. |
| TSB 21-2352 | 2021-11-02. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. Some 2021 Broncos built on or before 24-Aug-2021 may exhibit a whistle noise coming from the front center of the vehicle and/or the climate control housing. This may be due to the sealing on the climate control case. To correct the condition, follow the Service Procedure to apply butyl tape to cover small holes in the fresh air inlet door. |
| TSB 21-2345 | 2021-11-02. Service bulletin. STRUCTURE:BODY:HOOD:HINGE AND ATTACHMENTS; EQUIPMENT; STRUCTURE:BODY:HOOD. Some 2021 Bronco vehicles equipped with the Big Bend or Outer Banks trim levels built on or before 06-Aug-2021 may exhibit a whistle noise originating from the front of the hood area when traveling at speeds above 30 mph (50 km/h). If the whistle noise can be eliminated by taping off the gap between the hood and grille opening, this condition may be due to the hood seal design. To correct this condition, replace the hood seal with the improved hood seal. |
| TSB 21-2339 | 2021-11-02. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Some 2021 Bronco vehicles equipped with a soft top roof may experience paint scratches on the sports tube 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 the condition, follow the Service Procedure to apply protective hook and loop fasteners to sections of the soft top roof frame. |
| SSM 50210 | 2021-10-29. Service bulletin. POWER TRAIN:DRIVELINE:DRIVESHAFT; ENGINE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Some 2021 Bronco vehicles built on or before 14-Sep-2021 may experience a loss of power when driving with various illuminated warning indicators displayed in the instrument panel cluster (IPC). This may be due to an improper seating of the wiring harness push pins to the driveshaft loop which can cause an interference condition between the rear driveshaft and the 14405 harness near the C2370/C350 connector. If suspected, inspect the harness and connector for damage and repair as necessary. Once inspected and/or repaired fully, seat the harness push pins to the driveshaft loop. |
| SSM 50203 | 2021-10-29. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Some 2019-2021 Ranger vehicles built on or before 09-Aug-2021 and 2021 Bronco vehicles may experience a loss of power when driving in freezing temperatures with an illuminated malfunction indication lamp (MIL) and/or powertrain malfunction indicator (wrench) lamp with diagnostic trouble codes (DTC) P2111, P2112, and/or P2119. This may be due to water or ice buildup in the intake manifold behind the throttle body. If suspected, remove the throttle body and inspect for the presence of water or ice in the base of the intake manifold. If water or ice is found, replace the intake manifold with part number KB3Z-9424-B and crankcase vent oil separator hose, part number LB5Z-6A664-D. Refer to Workshop Manual (WSM) Sections 303-01 and 303-08. For claiming, use causal part number 9424 and applicable labor times from Section 09 of the Service Labor Times Standard (SLTS) Manual. |
| SSM 50201 | 2021-10-29. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; UNKNOWN OR OTHER. Some 2021 Bronco, Edge and Nautilus customers may be unable to authorize the FordPass/LincolnWay app and the Enable Connected Services prompt is not showing in the SYNC screen with no diagnostic trouble codes (DTC) present in the telematics control unit (TCU) or the gateway module A (GWM). Before any repair attempts, try to authorize the vehicle via FordPass/LincolnWay app in order to verify the customer concern is still present. If the concern is present, make sure the GWM is at the latest software level, and then make sure the TCU is at the latest software level. If no software updates are available, remove the TCU and GWM fuses to reset the modules. Make sure the customer is able to authorize the vehicle from FordPass/LincolnWay to confirm the repair. If the concern is still present, follow normal diagnostics in Workshop Manual (WSM), Section 415-00. |
| SSM 50199 | 2021-10-29. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. Some 2021 Broncos equipped with the Base, Big Bend, Black Diamond and/or Badlands trim levels built on or before 23-Jun-2021 may exhibit a whistle type noise coming from the drivers side mirror area of the vehicle. This may be caused by an excessive gap between the exterior mirror cover and glass housings. If the source of the noise is coming from the drivers door mirror assembly an updated exterior mirror cover is available to correct this condition. |
| SSM 50184 | 2021-10-29. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS:ACTUATORS/SOLENOIDS. Some 2021 Bronco/F-150/Explorer/Aviator/Police Interceptor Utility vehicles, excluding hybrid, may exhibit harsh or delayed engagement/shift concerns. Most concerns may be addressed with the PCM/TCM Transmission Accelerated Main Control Break In Routine. Refer to Workshop Manual (WSM), Section 307-01, DTC Chart and/or Diagnosis By Symptom to identify the clutch(s) to be cycled. This routine cycles the shift solenoids and clutch control valves to remove contamination that may be sticking the valves and must be performed along with an adaptive drive cycle before attempting internal service. Although this routine was developed for low mileage vehicles, its usage is being expanded for various symptoms across the life of the vehicle.For claiming, use causal part 7A100 and applicable labor operations in Section 7 of the Service Labor Time Standards (SLTS) Manual. |
| SSM 50169 | 2021-10-29. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. Some 2021 Bronco vehicles equipped with front parking aid sensors and a Ford Performance and/or aftermarket winch may inhibit the front parking aid sensor warning system and cause it to activate. As a resolution, the front sensors must be turned off by performing the following from the touchscreen; 1. Press Features on the touchscreen. 2. Press Driver Assistance > Park Aid Sensors > Front On, Rear On. 3. Front Sensors (Always) Off > Park Aid Sensors > Front Sensors (Always). Note: trying to adjust the location of the sensor will not resolve this concern. If the front sensors do not stay off after each key cycle monitor OASIS for additional information and schedule a service appointment with the customer once the repair becomes available. |
| 21B49 | 2021-10-05. Service bulletin. STRUCTURE:BODY; UNKNOWN OR OTHER. Certain 2021 Model Year Bronco Vehicles Equipped with a Hard Top Roof Roof Panel Delamination; In all of the affected vehicles, the exposed or unsealed edges on the molded in color hard top roof may cause an unsatisfactory appearance when exposed to extreme water and humidity. This concern is strictly an appearance issue as the function of the roof is uncompromised. |
| TSB 21-2297 | 2021-09-30. Service bulletin. AIR BAGS:SENSOR:SIDE IMPACT; ELECTRICAL SYSTEM. Some 2020-2021 Explorer/Aviator and 2021 Bronco vehicles may exhibit an illuminated airbag warning indicator with diagnostic trouble code (DTC) B1404:13 and/or B1407:13. This may be due to contamination and relative movement in the connection between the wiring harness and the side airbag. To correct the condition, follow the Service Procedure steps to replace the affected connector with a service pigtail and the affected side airbag. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.