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Service bulletins for the 2021 Ford Bronco Sport

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.

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

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
TSB 26-23282026-07-20. Service bulletin. POWER TRAIN; UNKNOWN OR OTHER. This bulletin supersedes 26-2194. Reason for update: update the Parts list to correct a part description " Loctite 638", update the claim quantity for the drain/fill plug, update the claim quantity of the wheel hub bolts (Corsair) and limited the parts list for Edge/Nautilus to only the rear drive unit fluid. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No relevant diagnostic trouble codes (DTCs) present This may be due to internal rear drive unit (RDU) fluid contamination.
SSM 549392026-06-22. Service bulletin. POWER TRAIN. Some 2020-2026 Corsair/Escape, 2021-2026 Bronco Sport, and 2022-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph (100 km/h), with no relevant diagnostic trouble codes (DTC) stored in the powertrain control module (PCM). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual (WSM), Section 307-01 > Diagnosis and Testing > Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307-01 > Removal and Installation > Torque Converter Seal. Remove the main control valve body. Refer to WSM, Section 307-01 > Removal and Installation > Main Control Valve Body. Overhaul and thoroughly clean the main control valve body. Refer to WSM, Section 307-01 > Overhaul > Main Control Valve Body. Reverse the removal procedure to reassemble the transmission. Install the transmission. Refer to WSM, Section 307-01 > Installation. For claim
SSM 547972026-05-08. Service bulletin. POWER TRAIN. Some 2020-2026 Corsair/Escape, 2021-2026 Bronco Sport, and 2022-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph (100 km/h), with no relevant diagnostic trouble codes (DTC) stored in the powertrain control module (PCM). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual (WSM), Section 307-01 > Diagnosis and Testing > Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307-01 > Removal and Installation > Torque Converter Seal. Remove the main control valve body. Refer to WSM, Section 307-01 > Removal and Installation > Main Control Valve Body. Overhaul and thoroughly clean the main control valve body. Refer to WSM, Section 307-01 > Overhaul > Main Control Valve Body. Reverse the removal procedure to reassemble the transmission. Install the transmission. Refer to WSM, Section 307-01 > Installation.
TSB 26-21942026-04-28. Service bulletin. POWER TRAIN. This bulletin supersedes 25-2627. Reason for update: To add a Step to reprogram the all-wheel drive (AWD) module for Bronco Sport vehicles. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No relevant diagnostic trouble codes (DTCs) present This may be due to internal rear drive unit (RDU) fluid contamination.
TSB 25-26272026-02-12. Service bulletin. POWER TRAIN. This article supersedes TSB 25-2552 to update the Parts List Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No diagnostic trouble codes DTCs present This may be due to rear drive unit internal (RDU) fluid contamination.
SSM 544032025-12-01. Service bulletin. POWER TRAIN. * 2021-2024 Bronco Sport built on or before 15-Dec-2024<br /> * 2022-2024 Mustang Mach-E<br /> * 2022-2025 Escape built on or before 22-May-2025<br /> * 2024 Maverick vehicles built on or after 17-Jan-2024<br /> <br /> Some of the above vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0929 stored in the gear shift module (GSM). This may be due to the software in the GSM. To correct the condition, reprogram the GSM module using the latest software level of the Ford Diagnosis and Repair System (FDRS). For claiming, use causal part 7P155 and labor operation numbers 7001D and 7001D4.
TSB 25-25522025-11-13. Service bulletin. POWER TRAIN. This article supersedes TSB 25-2351 to update the Service Procedure Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No diagnostic trouble codes DTCs present This may be due to rear drive unit internal (RDU) fluid contamination.
TSB 25-23512025-07-30. Service bulletin. POWER TRAIN. This article supersedes TSB 24-2386 to update the Service Procedure and Part List. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No diagnostic trouble codes DTCs present Note: Three (3) new Essential Special Service Tools (ESSTs) are required to service the internal clutch pack on vehicles equipped with a single active torque rear drive unit (RDU) only. These ESSTs are expected to ship to all dealers (US, Canada, Puerto Rico and Mexico) in September 2025. ESST packages were shipped to 100 selected dealers in the US and Canada in May 2025, based on RDU part sales activity. The RDU Internal Clutch Kit and Adhesive Sealant are currently under restricted ordering to ensure ample supply of parts are available to dealers with the ESSTs. All parts are expected to be available for open order by Q4 2025, when the ESSTs are planned to arrive at all dealers. Note: For dealers with the ESSTs and a vehicle in the service department that requires a repair using the new RDU Internal Clutch
SSM 539732025-07-02. Service bulletin. POWER TRAIN; ENGINE. Some 2021-2024 Edge/Nautilus, 2021-2025 Bronco/Bronco Sport/E-Series/Escape/Corsair/Expedition/Navigator/Explorer/Aviator/F-150/F-Super Duty/Mustang/Ranger, and 2022-2025 Maverick vehicles may require an A/C compressor clutch assembly replacement be performed for various concerns. Workshop Manual (WSM), Section 412-00 Removal and Installation has been updated to eliminate the need to remove and install the A/C compressor to change out the A/C Compressor clutch assembly.
TSB 24-21852024-06-12. Service bulletin. POWER TRAIN. This article supersedes TSB 23-2335 to update the TSB title, vehicles affected and parts list. Some 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine built on or before 30-Nov-2022, 2021-2022 Bronco Sport vehicles equipped with a 2.0L engine built on or before 28-Feb-2022, 2020-2022 Escape/Corsair vehicles equipped with 1.5L/2.0L/2.3L engines built on or before 30-Apr-2022, 2020-2022 Escape vehicles equipped with 2.5L full hybrid electric vehicle (FHEV) powertrain built on or before 31-Mar-2022 may exhibit a chatter/shudder during low speed turning events. This may be due to contamination of the rear drive unit (RDU) fluid through the RDU vent hose. To correct the condition, follow the Service Procedure to replace the RDU vent hose.
SSM 523142024-03-20. Service bulletin. POWER TRAIN. 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, 303-01 is extremely important. The bolt torque procedure can be found in the crankshaft front seal removal and installation procedure or in the engine assembly procedure.
TSB 23-23352023-11-03. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Some 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine built on or before 30-Nov-2022, 2021-2023 Bronco Sport vehicles equipped with a 2.0L engine built on or before 28-Feb-2022 or 2020-2022 Escape/Corsair non-plug in hybrid electric vehicle (PHEV) vehicles built on or before 30-Apr-2022 may exhibit a chatter/shudder during low speed turning events. This may be due to contamination of the rear drive unit (RDU) fluid through the RDU vent hose. To correct the condition, follow the Service Procedure to replace the RDU vent hose.
TSB 23-23082023-11-02. Service bulletin. SERVICE BRAKES, AIR:DISC:CALIPER; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:BEARINGS/BUSHINGS; EQUIPMENT. Some 2020-2023 Escape and 2021-2023 Bronco Sport vehicles may exhibit a moan noise when the vehicle is driven in reverse (R) in cold weather and/or high humidity. This may be due to the suspension sensitivity of the vehicle. To correct this condition, follow the Service Procedure to replace the standard and reinforced rear caliper bushings and apply Kluberpaste to the machined surfaces of the brake caliper and caliper support bracket.
SSM 518232023-08-11. Service bulletin. UNKNOWN OR OTHER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN. Some 2019-2023 Edge/Nautilus, 2020-2023 Escape/Corsair, 2021-2023 Bronco Sport, 2022-2023 Maverick vehicles equipped with all wheel drive (AWD) may exhibit chatter/shudder during low speed turning events. This may be due to fluid contamination in the rear drive unit (RDU). Drain and refill the RDU, refer to Workshop Manual Section (WSM) 205-02. Drive for 5 miles (8 km) in stop and go conditions with right and left turns and re-evaluate. If the issue is still present, continue with normal WSM diagnostics. For claiming, use base (4000) causal part.
SSM 517992023-07-25. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Some 2020-2023 Escape and 2021-2023 Bronco Sport vehicles equipped with the 1.5L engine may exhibit a lugging vibration and/or boom noise while driving in gears 5-8 at approximately 1500 engine revolutions per minute (RPM). This may be felt more when the engine is under a light to moderate load. A vibration and/or boom noise could be generated from the firing frequency of the 3 cylinders or when cylinder deactivation occurs and the engine is running on 2 cylinders. This condition is more noticeable when the vehicle is driven in ECO mode. This mode was designed to deliver maximum fuel efficiency and increase the driving range.
SSM 515372023-05-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2021-2023 Bronco Sport vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P025A, P025B, P00C6, P008A, P0627 and/or U0109 stored in the powertrain control module (PCM). This may be due to an intermittent or partial disconnect of the harness, connector pin push-outs or loose/corroded grounds to the fuel pump control module (FPCM) connector, PCM connector and/or battery junction box connector. Inspect the following connectors for 1.5L and 2.0L engines: C1551B, C1035A, C110, C401, C4033, C4330. Verify the connections are fully seated, without damage and/or pushed out pins/terminals prior to performing Workshop Manual (WSM) diagnostics or replacing any components. Inspect G404 and verify it's clean and secure. If any connector damage is found, repair as necessary. Refer to Wiring Diagram, Cell 005.
SSM 514592023-04-05. Service bulletin. POWER TRAIN. Some 2020-2022 Escape/Corsair, 2021-2022 Bronco Sport, and 2022 Maverick vehicles built on or before 23-Mar-2022 may exhibit a hard, stiff, and/or difficult to turn condition due to a lack of power steering assist during engine start-up with U3000 diagnostic trouble codes (DTCs) stored in the PSCM. Using the latest version of Ford Diagnosis and Repair System (FDRS) tool, select and run the PSCM - Reset the Power Steering Control Module (PSCM) application. After PSCM reset, perform an ignition cycle. Update the PSCM to the latest software level using FDRS tool. If the U3000 DTC returns, continue with diagnostics and repair direction using Workshop Manual (WSM), Section 211-02 > Power Steering > Diagnosis and Testing. For claiming, use causal part 3C529 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
TSB 23-20412023-03-04. Service bulletin. SERVICE BRAKES; POWER TRAIN. Some 2020-2022 Escape vehicles built on 1-Nov-2020 and through 29-Aug-2022 and 2021-2022 Bronco Sport vehicles built on or before 23-Sep-2022 may exhibit a moan noise when the vehicle is driven in reverse (R) in cold weather and/or high humidity. This may be due to the suspension sensitivity of the vehicle and interaction of the caliper housing with the pad backplate. To correct this condition, follow the Service Procedure to replace the rear caliper bushings.
SSM 513742023-03-04. Service bulletin. POWER TRAIN; SERVICE BRAKES. Some 2020-2021 Escape/Bronco Sport/Explorer and 2020-2021 Corsair/Aviator vehicles equipped with electric brake booster (EBB) built on or before 1-Aug-2022 may exhibit an illuminated anti-lock brake system (ABS) warning indicator and stability-traction control warning indicator with diagnostic trouble code (DTC) U3000:96 erroneously stored in the ABS module. This condition occurs during connection or power interrupt to the EBB module. If this code is stored and the ABS system has been reassembled, clear the DTC code using Ford Diagnosis and Repair System (FDRS) scan tool and check for recurrence. If the DTC persists, perform normal diagnostics. Refer to the Workshop Manual (WSM), Section 206-09 Anti-Lock Brake System. For claiming use the causal part number 2C219 and applicable labor operations in Section 2 of the Service Labor Time Standards.
SSM 512552023-01-05. Service bulletin. POWER TRAIN; STEERING:STEERING CONTROL MODULE. Some 2020-2022 Escape/Corsair, 2021-2022 Bronco Sport, and 2022 Maverick vehicles may exhibit a hard, stiff, and/or difficult to turn condition due to a lack of power steering assist during engine start-up with various U3000 diagnostic trouble codes (DTCs) and/or U3000:66. To correct this condition, using the latest version of Ford Diagnosis and Repair System (FDRS) tool, select and run the PSCM - Reset the Power Steering Control Module (PSCM) application. After PSCM reset, perform an ignition cycle. Update the PSCM to the latest software level using (FDRS) tool. If DTCs U3000 returns, continue with diagnostics and repair direction using Workshop Manual (WSM), Section 211-02 > Power Steering > Diagnosis and Testing. For claiming, use causal part 3C529 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 510112022-08-15. Service bulletin. POWER TRAIN. Some 2018-2022 Ford and Lincoln vehicles equipped with the 8F35 transmission built on or before 16-Mar-2022 may exhibit transmission slip during acceleration from a stop when hot. This may be due damaged internal case half pump seals (7N265). To correct the condition, remove the transmission and replace the internal case half pump seals. Refer to Workshop Manual (WSM), Section 307-01.
SSM 502742021-12-07. Service bulletin. UNKNOWN OR OTHER; PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE; POWER TRAIN:TRANSMISSION CASE/HOUSING. Some 2021 Bronco Sport vehicles may exhibit a hiss or rattle noise while driving. This may be due to an internal issue with the manual park release cable. If the noise is eliminated when the cable is disconnected from the transmission, install a revised manual park release cable part number LX6Z-7D246-S following Workshop Manual (WSM), Section 307-05.
21B552021-09-30. Service bulletin. POWER TRAIN. Certain 2021 and 2022 Model Year Bronco Sport, Maverick, Escape, Corsair, Edge, and Nautilus equipped with an 8F35 Transmission Automatic Transmission Fluid Level Check; In some of the affected vehicles, the transmission may have been over filled with transmission fluid. Transmission that are overfilled may result in likelihood of transmission fluid aeration, degraded shift quality in the vehicle, accelerated wear on bushings and bearings, and reduced cooling in the transmission.
TSB 21-22942021-09-30. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:DOGS/SYNCHROS. Some 2019-2020 Edge/F-150/Fusion/Continental/MKZ/Nautilus, 2019-2021 Mustang/Ranger/Transit Connect, 2020-2021 EcoSport/Escape/Expedition/Explorer/F-Super Duty/Aviator/Corsair/Navigator and 2021 Bronco Sport vehicles with SYNC 3 may experience various SYNC performance related concerns To correct the condition, follow the Service Procedure to update the accessory protocol interface module (APIM) software.
SSM 501312021-09-28. Service bulletin. POWER TRAIN; ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Some 2021 Bronco Sport vehicles may exhibit a hiss or rattle noise in the engine compartment while driving which may be originating from the manual park release cable. Disconnect the cable from the transmission and road-test to confirm the noise is eliminated. If the noise is still present, refer to Workshop Manual (WSM), Section 100-04 for diagnostic and repair information. If the cable is causing the noise, reconnect the cable and inform the customer that Ford is working on a solution which is expected to be available by mid-December 2021. Advise the customer that the vehicle is safe to drive and schedule a follow-up appointment for mid-December. Once the solution becomes available, contact the customer and confirm the service appointment is going forward. Monitor OASIS for updates.

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