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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.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
TSB 21-22292021-08-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may experience a disabled Pro Power Onboard feature with 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 current 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 21-22052021-08-02. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles equipped with a 5.0L engine, built on or before 23-Apr-2021, and having charging system diagnostics performed in the Workshop Manual (WSM) may experience the generator voltage desired (GENVDSD) parameter identification (PID) missing from the powertrain control module (PCM) PID list in the Ford Diagnosis and Repair System (FDRS). This may be due to a software parameter in the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM.
SSM 499682021-08-02. Service bulletin. ELECTRICAL SYSTEM. Some 2020-2021 Corsair/Nautilus/Navigator/Aviator, 2021 F-150/Mustang Mach-E vehicles equipped with Phone-as-a-Key may have diagnostic trouble code(s) (DTC) U200D:15, U200E:15, U200F:15, B15**:31, B15**:49 and/or B15A5:56 stored in the remote function actuator (RFA) module. If any of these DTCs are detected during normal diagnostics, clear the DTCs, reflash RFA to the latest software level and start a new Ford Diagnosis and Repair System (FDRS) session. Verify that DTCs are no longer present. If only the B15**:31, B15**:57 and/or B15A5:56 DTC(s) returns in the RFA after a self test, follow normal Workshop Manual (WSM) diagnostics, Section 419-01C.
SSM 499622021-08-02. Service bulletin. ELECTRICAL SYSTEM. Some 2021 Mustang Mach-E and 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 499442021-08-02. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Some 2021 Mustang Mach-E/F-150 vehicles may exhibit audio settings resetting after a key cycle, Android Auto concerns, Sirius presets missing more than three pages after a key cycle, touchscreen intermittent freezing/locking up, Pro Power Onboard messaging confusion after a tripped circuit breaker (F-150 only), WiFi keyboard defaulting to UK English, WMA files not playing properly from a USB and/or Bluetooth connectivity concerns. There may be a software concern in the APIM. Ford is working on an update that is expected via over the air (OTA) in July 2021. The software will update automatically if Vehicle Connectivity is turned ON. Inform the customer that they can continue to drive the vehicle. Contact the customer in August to determine if they received the update. If the customer needs assistance, schedule a follow-up appointment. Monitor OASIS for updates.
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.
SSM 499122021-07-02. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150/Edge vehicles equipped with SYNC4 without navigation may exhibit a condition where the compass is inoperative and/or stuck in one direction in instrument cluster and/or SYNC4 screen. This may be due to a software concern in the telematics control unit (TCU). Inform customers that Ford is currently working on a software update that will be released via an over the air (OTA) update expected in July 2021, and that the TCU software will update automatically if the vehicle has Vehicle Connectivity turned ON in the touchscreen Settings. Let the customer know they can continue to drive the vehicle, and contact the customer in August to determine if they received the update. If the customer needs further assistance with the update, schedule a follow-up appointment. Monitor OASIS for updates.
SSM 498622021-07-02. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles built on or before 18-May-2021 may experience a Return Passenger Seat To Upright Position warning in the message center of the instrument panel cluster (IPC) when the passenger seat is already in the upright position. This may be due to a software parameter in the driver front seat module (DSM). To correct the condition, download and run the DSM - Driver Front Seat Module (DSM) Configuration app on the latest level of the Ford diagnostic scan tool. For claiming, use causal part number 14C708 and applicable labor times from Section 10 of the Service Labor Times Standard (SLTS) Manual.
SSM 498612021-07-02. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles may experience the Easy Entry/Exit feature missing from the SYNC 4 touchscreen menu. This may be due to various software parameters in the accessory protocol interface module (APIM). To correct the condition, download and run the APIM - SYNC Module (APIM) Configuration app on the latest level of the Ford diagnostic scan tool. The vehicle and APIM will need to be powered down and restarted to recheck the SYNC 4 touchscreen for the Easy Entry/Exit feature appearing in the menu. For claiming use causal part number 14G671 and applicable labor times from Section 10 of the Service Labor Times Standard (SLTS) Manual.
21B332021-07-01. Service bulletin. ELECTRICAL SYSTEM. In all of the affected vehicles, the Gateway Module (GWM) was not properly configured at the assembly plant. Affected vehicles present the following symptoms: "Activate" button is not visible to customer when trying to activate vehicle via FordPass; Sync4 system displays the massage "vehicle hot spot feature is not enable in this vehicle"; and all connected features (software updates, alerts, bug reports, command & control, vehicle location, connected navigation, etc.) are disabled.
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 21-21412021-06-03. 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 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 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.
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.
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.

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