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Service bulletins for the 2021 Ford Mustang

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.

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

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By component

By trouble code

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

Bulletins, newest first
SSM 505552022-03-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. Some 2020-2021 Mustang GT500 vehicles may experience erratic and harsh shifting at highway speeds and/or reduced speed when accelerating from a stop, with a powertrain malfunction (wrench) indicator and DTCs P1601/P061A while using SelectShift. This may be due to powertrain control module (PCM) calibration. This condition does not affect vehicle durability and no additional diagnosis or service is required at this time. Inform customers that they can continue to drive the vehicle but not to use SelectShift. Engineering is currently working on a solution for this condition that is expected in April 2022. Replacement or reprogramming of the PCM will not resolve this condition at this time. Schedule a follow-up appointment for repair in April 2022. Once the update becomes available, contact the customer and confirm the service appointment. Monitor OASIS for updates.
SSM 503752021-12-27. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. Some 2016-2021 Ford and Lincoln vehicles equipped with SYNC 3 may exhibit a condition where the navigation voice prompts are inoperative after a SYNC map update. This may be due to an incomplete installation of the SYNC map software. If possible, using the original USB that installed the update, reperform the update and verify the navigation voice prompts have returned. Multiple reboots are expected when this update is being performed. Verify the Installation Is Complete message displays in the touch screen. If the original USB is not available, go to website https://syncnavigation.com/ford/home or https://syncnavigation.com/lincoln/home to download the files once more for the affected vehicle. For further map update support, reference the FAQ section on these websites.
TSB 21-24112021-12-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This article supersedes TSB 21-2342 to update the Issue, Action, and Service Procedure. 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 including but not limited to: Sirius audio not functioning properly after a key cycle with active subscription Presets not responding or indicating properly Intermittent audio echo/robotic voice heard during a Bluetooth phone call Wi-Fi connection message pop-up every key cycle Frozen unresponsive touchscreen Solid blue screen when moving forward at speeds above 16 km/h (10 mph) (2019 vehicles only) Rear parking aid camera remains on the screen at speeds below 16 km/h (10 mph) (2019 vehicles only) Inoperative infotainment applications Poor/no AppLink function Apple CarPlay not launching on connection or a black screen when connected Voice prompts that skip or have short pauses while directions are being provided
TSB 21-23462021-11-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Some 2021 Mustang vehicles equipped with a 2.3L engine and a 6-speed manual transmission MT82 built on or before 24-Sep-2021 may exhibit an illuminated MIL and diagnostic trouble codes (DTC) P0300 and/or P0316 in the powertrain control module (PCM). This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.
TSB 21-23422021-11-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 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 500672021-09-04. Service bulletin. ELECTRICAL SYSTEM. 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 HK12 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 500392021-09-04. Service bulletin. ELECTRICAL SYSTEM. Some 2016-2021 Ford or Lincoln vehicles equipped with SYNC 3 or SYNC 4 may exhibit a blank screen or other various SYNC symptoms only when the vehicle is in transport mode. This is considered normal due to the power saving features enabled while in transport mode. It is beneficial for battery life to keep the vehicle in transport mode until the vehicle is prepped for sale. To prevent a SYNC system lockup during transport mode deactivation, follow the Workshop Manual (WSM) procedure exactly allowing time for the SYNC system to complete its tasks such as fully booting up or powering down and shutting off before moving to the next step of the procedure. If the vehicle exhibits a blank screen or SYNC symptoms after transport mode deactivation, refer to WSM, Section 415-00 for normal diagnosis. The SYNC version can be confirmed via OASIS.
TSB 21-22632021-09-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. 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.
TSB 21-21502021-06-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. 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.
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 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 496902021-03-31. Service bulletin. ELECTRICAL SYSTEM. For 2018-2021 EcoSport/Expedition/Navigator, 2019-2021 Ranger/Transit Connect, 2020-2021 Escape/Explorer/SuperDuty/Transit/Aviator/Corsair, 2021 Bronco Sport/F-150/Mustang/Mach-E the Workshop Manual (WSM) diagnostics may direct to replace a module on vehicles that use Ford Diagnosis and Repair System (FDRS). First, an FDRS session must be created on the vehicle prior to removing the faulted module. Once the session is started, run the Programmable Module Installation and replace the module only when instructed by FDRS. Installing a new module prior to starting a scan tool session may result in incomplete module configuration with DTCs U2100, U2101 and/or U2200. Once a session has been started, continue to follow normal WSM procedures to repair the vehicle.
SSM 495112021-02-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Some 2021 Mustang Mach-E vehicles may exhibit a condition of the high voltage battery coolant expansion tank reading over the max fill line. The max fill line may be disregarded, only the min line is relevant. Do not attempt to remove coolant from the high voltage battery coolant expansion tank if the coolant level is above the max fill line.

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