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Service bulletins for the 2021 Lincoln Corsair

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.

186 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.
SSM 546152026-03-04. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; POWER TRAIN. Some 2020-2026 Escape and 2021-2026 Corsair vehicles equipped with a 2.5L engine may exhibit a fuel door that won't open with diagnostic trouble code (DTC) P04CA stored in the powertrain control module (PCM). This may be due to an open circuit on circuit SBB05 and/or a damaged splice S133. Before performing the pinpoint test for P04CA in Workshop Manual (WSM), Section 310-00, inspect circuit SBB05 and splice S133 for damage such as an open circuit. Repair as necessary. Refer to Wiring Diagram, Cell 005. If no damage is found, refer to WSM, Section 310-00 for normal diagnostics. For claiming use causal 14290 and labor operations 12650D, 12650D45, and 12650D45WR.
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.
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.
SSM 537642025-05-21. Service bulletin. POWER TRAIN; ENGINE. Some 2020 Continental, 2020-2024 Edge/Nautilus, 2020-2025 Explorer/Aviator/Escape/Corsair/F-150/F-Super Duty/Ranger/Transit/E-Series, 2021-2025 Bronco, and 2022-2025 Maverick vehicles may require an engine cooling system flush to be performed for various concerns. Workshop Manual (WSM), Section 303-03 has been updated to eliminate the need to remove and install the radiator assembly to perform a radiator flush.
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.
TSB 24-21392024-06-03. Service bulletin. POWER TRAIN. Some 2020-2024 Escape and Corsair Vehicle equipped with the 8F35 or the HF45 transmission may exhibit a click or ting noise during acceleration from a stop, or in some cases during the end of a stop event. This may be due to the front half shaft sticking to the wheel bearing surface. To correct this condition, perform the Service Procedure below to lubricate the halfshaft and wheel bearing hub assembly mating surface.
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.
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 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.
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 511172022-10-11. Service bulletin. POWER TRAIN. Some 2021-2022 Bronco Sport 1.5L, 2019-2022 Edge/Nautilus, 2020-2022 Escape/Corsair, and 2022 Maverick vehicles may exhibit an illuminated AWD warning indicator or fault message with diagnostic trouble code (DTC) C0095:71/:19 stored in the all wheel drive (AWD) module. Some 2021-2022 Bronco Sport 2.0L may exhibit an illuminated AWD warning indicator or fault message with DTC C05D9:71, C05E8:71, C05D8:19 and/or C05E7:19 stored in the AWD module. This may be due to a rear drive unit (RDU) motor magnet ring misalignment. RDU assembly replacement is no longer required. To correct the condition, replace the RDU motor which is now available separately for service. Refer to Workshop Manual, Section 205-02 for diagnosis and repair procedures. For claiming use causal part 4C210 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 507442022-05-14. Service bulletin. POWER TRAIN. Some 2013-2018 C-Max, 2013-2020 Fusion/MKZ, 2020-2022 Escape, 2021-2022 Corsair, 2022 Maverick vehicles equipped with HF35/HF45 hybrid transmissions can now be disassembled to repair and clean any contamination that may have been the result of a differential or transfer shaft bearing failure and the transmission can be overhauled/rebuilt. Service tools and service parts are now available. Refer to the Workshop Manual, Section 307-01.
TSB 22-21472022-04-26. Service bulletin. EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE. Some 2020-2021 Escape and 2021 Corsair vehicles equipped with a 2.5L full hybrid electric vehicle (FHEV) or 2.5L plug-in hybrid electric vehicle (PHEV) powertrain may exhibit a no crank/no start condition due to the passive anti-theft system (PATS) immobilizer being enabled. This may be more prevalent after a vehicle service/repair. This may be due to software that renders the inverter system controller (ISC) (also known as secondary on-board diagnostic module C (SOBDMC)) inoperable when a vehicle repair requires a PATS update. To correct the condition, follow the Service Procedure to reprogram various modules starting with the powertrain control module (PCM).
SSM 502122021-10-29. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN. Some 2020-2021 Corsair vehicles built on or before 03-Mar-2021 with the 8F40 transmission may have a torque converter clutch that will not release/unlock at below 5 mph (8 km/h). This may be due to an internal issue with the torque converter clutch (TCC). If this condition is present, install a new torque converter assembly. Refer to Workshop Manual (WSM), Section 307-01. For claiming, use causal part 7902 and applicable labor operations in Section 7 of the Service Labor Time Standards (SLTS) Manual.
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.

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