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Service bulletins for the 2021 Ford F-150

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.

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

By type

By component

By trouble code

Only bulletins with component: Manual transmission are shown. Show all

Bulletins, newest first
TSB 24-20972024-04-04. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Some 2021-2022 F-150 non-Lightning vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator and Service Vehicle Soon message in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) U031D in the powertrain control module (PCM) and no other drivability concerns. This may be due to the configuration of the PCM.
SSM 523712024-04-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2021-2022 F-150 non-Lightning vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator and Service Vehicle Soon message in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) U031D in the powertrain control module (PCM) and no other drivability concerns. This may be due to the configuration of the PCM. To correct this condition, run the PCM - Disable Pro Trailer Hitch Assist application using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool.
SSM 523492024-04-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2021-2023 F-150 vehicles may exhibit DTC C0604:00 stored in the powertrain control module (PCM) and may have an Active Air Dam System Fault See Manual message displayed in the instrument panel cluster (IPC). To correct this condition, clear and retest for the DTC C0604:00. If DTC C0604:00 returns, refer to Workshop Manual (WSM) Section 501-19 Bumpers, Diagnosis and Testing for additional diagnosis.
SSM 509762022-08-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:ENGINE; ELECTRICAL SYSTEM. Some 2021-2022 F-150 vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated powertrain malfunction (wrench) indicator with DTC P2C44:00 stored in the powertrain control module (PCM). This may be due to an issue with ground circuit GD132 or the auxiliary battery isolator. Perform Pinpoint Test I in Workshop Manual (WSM), Section 303-06D and make sure the integrity of GD132 is carefully inspected and tested with the inclusion of G102, C146 and C1989C. Then perform the Auxiliary Battery Conditions(s) Test in WSM, Section 414-01, Pinpoint Test B. If no issues are found in Pinpoint Test I, GD132 and the auxiliary battery condition test passes, replace the auxiliary battery isolator per WSM, Section 414-01. For claiming, use causal part 14526 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 500492021-09-04. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:DOGS/SYNCHROS. Some 2017-2021 Ford and Lincoln vehicle customers may receive a message in their FordPass or Lincoln Way App stating Feature Unavailable. Since this is a fleet vehicle, it cannot access the SYNC Connect or FordPass Connect feature or Lincoln Connect or Embedded Modem Do not replace the TCU or perform any repair to resolve this condition. Refer the owner of the vehicle to Ford Pass Guides or Lincoln Way Concierge Teams to assist in removing the fleet telematics subscription.
SSM 499282021-08-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:DOGS/SYNCHROS. Some 2021 Mustang Mach-E, F-150, Edge/Nautilus or Bronco vehicles equipped with SYNC 4 may have a customer symptom of the SYNC voice commands being activated without pushing the steering wheel switch. This may be due to the feature called Wake Word within SYNC 4. This feature allows the driver to activate the SYNC 4 system without pushing the steering wheel switch. Under the touchscreen Settings > Voice Settings the preferred Wake Word can be changed. The feature can also be disabled if the customer does not want the SYNC voice commands being activated without touching the steering wheel switch. This feature is not a defect. Do not submit a claim for this condition.

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