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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

Bulletins, newest first
TSB 21-21792021-07-01. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles may experience a diagnostics trouble code (DTC) U2100 in the trailer module (TRM) after installation of the Ford Accessory Trailer Brake Control kit. This may be due to an error in the configuration data needed to update the TRM. To correct the condition, follow the Service Procedure to configure and program the TRM and the instrument panel cluster (IPC).
TSB 21-21592021-06-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. Some 2021 F-150 vehicles equipped with a 5.0L engine and built on or before 23-April-2021 may exhibit a Low Oil Level message displayed in the instrument panel cluster (IPC) message center with a dipstick oil level reading above the minimum line. This may be due to a software parameter within the powertrain control module (PCM). To correct the condition, follow the Service Procedure to reprogram the PCM.
TSB 21-21582021-06-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. Some 2021 F-150 vehicles equipped with a 5.0L engine and built on or before 23-Apr-2021 may experience a runs rough, hesitation and/or a lack of power condition with an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0301, P0304, P0306, P0307, P3402, P3426, P3442 and/or P3450 stored in the powertrain control module (PCM). This may be due to various software parameters within the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM and reset the keep alive memory (KAM).
TSB 21-21542021-06-03. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2021 F-150 vehicles equipped with a 5.0L engine and built on or before 04-Mar-2021 may experience an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTC) P0364, P060B, P062B, P164C, P2601, P0171, P0172, P0174, P0175 and/or P1104 stored in the powertrain control module (PCM). This may be due to various software parameters within the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM and reset the keep alive memory (KAM).
TSB 21-21442021-06-03. Service bulletin. EQUIPMENT. Some 2015-2021 F-150 and 2017-2021 F-Super Duty vehicles may exhibit a lack of heat or cooling from the cabin vents when the climate control settings are adjusted between hot and cold. This may be due to a stuck/binding temperature door within the climate control housing or binding/inoperative temperature door actuator. Diagnostic trouble code (DTC) B1081:07 may be present in the front controls interface module (FCIM). To correct the condition, follow the Service Procedure steps to remove the climate control housing and replace the temperature door actuator(s) and/or lubricate the temperature blend door bearing surface.
TSB 21-21412021-06-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Some 2021 F-150 vehicles equipped with console shift may exhibit a condition where the gear shift lever will not shift out of PARK. Some vehicles may also have the gear shift lever stow position delayed or inoperative. This may be due to software in the gearshift module (GSM) or internal GSM damage. To correct the condition, follow the Service Procedure to reprogram the GSM or replace GSM if internal damage is found.
TSB 21-20722021-06-03. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTCs) P0A1A and/or P1A0E stored in the secondary on board diagnostic control module C (SOBDMC), also referred to as the inverter system controller (ISC). These DTCs may be set due to an issue related to electric motor performance. To correct the condition, follow the Service Procedure steps to identify a concern with the hybrid drive unit.
SSM 498262021-06-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some 2021 F-150 vehicles built on 29-Apr-2021 and through 18-May-2021 may exhibit FordPass missing the button to activate the vehicle and/or a message stating WiFi hotspot feature not enabled when attempting to access the WiFi hotspot settings in the SYNC4 menu. This may be due to the gateway module (GWM) configuration. To correct the condition, download and run the GWM - Gateway Module A (GWM) Configuration app using the Ford Diagnosis and Repair System (FDRS). For claiming use causal part number 14G650 and applicable labor times from Section 10 of the Service Labor Times Standard (SLTS) Manual.
SSM 498212021-06-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. Some 2015-2021 Ford and Lincoln vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTC) P0011, P0012, P0014, P0015, P0016, P0017, P0018, P0019, P0021, P0022, P0024 and/or P0025. This may be due to small debris causing the VCT solenoid to stick. Before attempting any component diagnosis or replacement of the VCT solenoid, refer to Powertrain Control and Emissions Diagnosis (PC/ED) pinpoint test HK11 to cycle the affected VCT solenoid 10 times to attempt to clear the debris. For claiming, use causal part 6M280 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 498202021-06-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Some 2017-2021 Ford and Lincoln vehicle owners may experience a condition of missing Authorization, Command and Control, Battery Charging Details or Phone-as-a-Key setup buttons/selections in their FordPass or LincolnWay App. This condition is due to an error within the FordPass or LincolnWay App and not due to a concern on the vehicle. Verify that the customers FordPass or LincolnWay App is at the latest version. Replacement or reprogramming of the telematics control unit (TCU)/gateway module (GWM)/remote function actuator (RFA) will not resolve this condition. If the condition persists, Utilize the FordPass Guides or Lincoln Way Concierge teams.
SSM 498052021-06-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. Some 2011-2021 vehicles equipped with a diesel engine may have engine oil in the exhaust after turbocharger replacement for various reasons. To correct the condition, remove the exhaust and stand the exhaust up with the turbocharger inlet side facing down using a suitable drain pan. Allow the exhaust to drain for at least 24 hours and reinstall. Do not perform a manual exhaust regeneration.
SSM 498042021-06-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Some 2021 F-150 vehicles may exhibit a side door ajar and/or a hood ajar warning message displayed in the instrument panel cluster (IPC) with or without diagnostic trouble codes (DTC) P166B, B1175, B1176, B11C1 and/or B11C0. This may be due to a misalignment of the the door or hood and/or their strikers. Before attempting any component diagnosis or replacement, check the door and/or hood and their strikers for proper alignment. Refer to Workshop Manual (WSM), Section 501-03 alignment procedures. If the doors and hood are properly aligned, continue with normal diagnostics.
SSM 497952021-06-01. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM. Some 2018-2021 Ford and Lincoln vehicles may not be able to perform remote commands via the FordPass/LincolnWay App due to an erroneous deep sleep message. If the vehicle has been driven within 14 days and the battery state of charge is above 9.5 volts when the deep sleep message set, this is an erroneous message. Starting and running the vehicle will clear the message and allow the remote commands to function again. Inform customers that engineering is currently working on a solution for this condition that will be released via an over the air (OTA) update that is expected in June 2021. Replacement or reprogramming of the telematics control unit (TCU)/gateway module (GWM) will not resolve this condition. Monitor OASIS for additional information and schedule service appointments for customers once the repair becomes available.
SSM 497852021-06-01. Service bulletin. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. Some 2021 F-Super Duty and 2021-2022 E-Series vehicles equipped with a 6.2L or 7.3L gasoline engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0457 stored in the powertrain control module (PCM). This may be due to a loose fuel filler cap. The fuel filler cap design has changed, requiring multiple turns to seal properly. Advise the customer to turn the fuel filler cap clockwise until there is at least one audible click to seal properly. For further diagnostics, refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual, pinpoint test HX.
21B08-S12021-05-04. Service bulletin. ELECTRICAL SYSTEM. Certain 2021 Model Year F-150 Vehicles Heated Mirror and Integrated Trailer Relay Module Reflash Additional labor allowance to clear the potential unavailable brake assist message. Some of the affected vehicles may have software logic errors affecting the heated mirror and the ITRM. The heated mirror may not output heat at temperatures below zero degrees Celsius. Also, a battery drain may occur under a certain sequence of events due to a logic error in the ITRM. Under certain specific sequence, the ITRM battery drain may result in the inability to start the vehicle .A customer could experience a battery drain within 14 hours under the following conditions: the trailer is connected, vehicle is unlocked, parked, and the engine is off.
TSB 21-21312021-05-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine and built on or before 23-Apr-2021 may experience an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300, P0301-P0306, P0316, P050E, P1674, P0454 and/or P2451 stored in the powertrain control module (PCM). This may be due to various software parameters within the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM.
TSB 21-21282021-05-04. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may experience diagnostic trouble code (DTC) U0288 stored in the secondary on-board diagnostic module C (SOBDMC), also referred to as the inverter system controller (ISC). This may be due to various software parameters within the SOBDMC. To correct the condition, follow the Service Procedure to perform a multi-module reprogramming, beginning with the powertrain control module (PCM).
TSB 21-21272021-05-04. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine and the 7.2 kilowatt (kW) inverter system may experience a "Pro Power Onboard Service Required" message in the center stack display and diagnostic trouble code (DTC) P0364 stored in the powertrain control module (PCM). This may be due to various software parameters within the direct current/alternating converter module A (DCACA) inverter and the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM and the DCACA inverter.
TSB 21-21262021-05-04. Service bulletin. POWER TRAIN. Some 2021 F-150 vehicles equipped with a 5.0L engine built on or before 9-Apr-2021 may exhibit a no start/no powertrain control module (PCM) communication condition if the oil level is approximately 1 or more quarts low and the oil life is at or less than 20%. This may be due to various parameters within the PCM. To correct the condition, follow the Service Procedure to reset and reprogram the PCM.
SSM 497672021-05-03. Service bulletin. SERVICE BRAKES. Some 2021 F-150 vehicles may exhibit a Reverse Brake Assist Unavailable message after module programming has been completed. This may be due to a network interruption from programming or configuring modules, which can cause steering center find to be reset. When the steering center find is reset, this causes various features to become disabled. The steering center find can be relearned by driving the vehicle approximately 5 minutes above 18 mph (30 km/h) straight ahead on a flat surface with no steering inputs for a few seconds. When steering center is found the Reverse Brake Assist Unavailable message will go away.
SSM 497612021-05-03. Service bulletin. ENGINE AND ENGINE COOLING. Some 2011-2021 Mustang and F-150 vehicles equipped with a 5.0L engine may exhibit a ticking noise at idle after an engine oil change. It is often referred to as typewriter noise because of its similarity to the sound of a mechanical typewriter. The noise in question may be heard on some engines when engine temperatures reach 150F (65Å’C) or higher and engine speed is at idle up to approximately 1700 RPMs. It can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. The typewriter noise is not detrimental to the engine function or durability and has no short or long term effects on the engine. This an operating characteristic of the 5.0L engine and no repairs should be attempted.
SSM 497562021-05-03. Service bulletin. BACK OVER PREVENTION:SOFTWARE. Some 2018-2021 vehicles supported by FDRS may not list a software update for a module under the SW Updates tab although an SSM or TSB is published for a software update. This may be due to the module already being at the latest software level. A later software level may have been programmed at the assembly plant, during a previous dealer visit or by an over the air (OTA) update for vehicles that have automatic updates enabled in the SYNC system settings. To review a vehicle's OTA update history, visit the Connected Vehicle > OTA Dashboard tab in OASIS. Information about the OTA Dashboard can be found on FMCDealer.com when performing a search on OTA History Job Aid.
SSM 497532021-05-03. Service bulletin. POWER TRAIN. Some 2020-2021 Explorer/Aviator/Police Interceptor Utility and 2021 F-150 Hybrid vehicles equipped with a 10R80 modular hybrid transmission (MHT) and with less than 100 miles (160 kilometers) may exhibit a transmission fluid leak that appears to be coming from between the hybrid drive unit and transmission case joint. This condition may be due to residual transmission fluid trapped between the front module and transmission case joint during the assembly process. Clean the area thoroughly and reevaluate with the vehicle at operating temperature before attempting any leak related repairs.
SSM 497462021-05-03. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles may experience intermittent inoperative remote commands from the FordPass mobile app. Intermittent command behavior may also lead the customer to believe there is no cellular signal or coverage. FordPass mobile app commands may become operative again after starting the vehicle with the ignition or key fob. This may be due to software in the gateway module (GWM). To correct the condition, reprogram the GWM using the latest level of the appropriate scan tool. Vehicles with automatic updates enabled may receive this software via an over-the-air update. For claiming, use causal part number 14G490 and applicable labor times from Section 10 of the Service Labor Times Standard (SLTS) Manual.
SSM 497382021-05-03. Service bulletin. STEERING; EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:BRAKING. Some 2021 F-150 vehicles may exhibit a Reverse Brake Assist Unavailable message after module programming has been completed. This may be due to a network interruption from programming or configuring modules, which can cause steering center find to be reset. When the steering center find is reset, this causes various features to become disabled. The steering center find can be relearned by driving the vehicle above 10 mph (16 km/h) for over 10 minutes.

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