2021 Ford Mustang Technical Service Bulletins

150 technical service bulletins (TSBs) are on record for the 2021 Ford Mustang. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10211909May 10, 2022Engine cooling, Transmission and drivetrain. Some 2021-2022 Mustang vehicles built on or before 21-Apr-2022 and equipped with a 2.3L EcoBoost engine may exhibit an illuminated malfunction indicator lamp (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.
• 10211901May 9, 2022Transmission and drivetrain. 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…
• 10211711May 4, 2022Electrical system. This article supersedes TSB 21-2011 to update the vehicle model years affected and Service Procedure. Some 2018-2022 Mustang vehicles may exhibit various concerns with the active exhaust system. These may include Drive Mode Not Available or Exhaust Mode Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5…
• 10210850Apr 28, 2022Tires. Some 2021 and 2022 Ford and Lincoln vehicles may experience a tire sidewall wavy/indentation appearance in the radial direction on one or both sidewalls. Sidewall wavy/indentation appearance is a common cosmetic characteristic of radial tire construction and will not affect the performance of the tire.
• 10210471Apr 22, 2022Equipment, Transmission and drivetrain. Some 2017-2020 F-150, 2018-2022 Expedition/Navigator/Mustang and 2019-2022 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift.
• 10210245Apr 11, 2022Steering, Suspension. Some 2018-2022 Mustang vehicles (Non-Shelby) and built at Flat Rock Assembly may experience a clunk/pop type noise when turning the steering wheel. This may be due to an incorrectly installed upper spring seat which is part of the front strut assembly. To correct this condition, remove the suspect strut(s) from the vehicle and inspect the upper spring seat for damage and/or incorrect installation and repair as…
• 10210941Apr 5, 2022Equipment, Other or unknown. In various 2017-2022 Ford and Lincoln vehicles, customers may receive a message in the FordPass or LincolnWay App stating "Feature Unavailable. Since this is a fleet vehicle, it cannot access the (SYNC Connect) FordPass or LincolnWay app through the TCU Embedded Modem. If this message appears, the vehicle may be equipped with a fleet telematics module. Replacement of the TCU or TCU related repairs will not prevent…
• 10222460Mar 31, 2022Latches, locks and linkages. Certain 2015 – 2021 Model Year Mustang Convertible Vehicles Door Opens to Secondary Latch Position Submitting Owner Letter
• 10209209Mar 21, 2022Seats, Equipment. This article supersedes TSB 21-2236 to update the models and year affected. Some 2013-2018 C-Max, 2013-2020 Fusion/MKZ, 2013-2022 Escape, 2015-2018 Focus, 2015-2019 MKC, 2015-2022 Edge/F150/Mustang, 2016-2018 MKX, 2016-2019 Explorer, 2017-2022 F-Super Duty, 2018-2022 EcoSport/Expedition, 2019-2022 Ranger/Nautilus, 2021-2022 Bronco/Bronco Sport/Mustang Mach-E, 2022 Maverick vehicles may experience seat pan…
• 10209027Mar 11, 2022Equipment, Engine cooling. Some 2020-2021 Mustang GT500 vehicles may exhibit a lack of power and/or an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P1228. This may be due to the one-way clutch on the supercharger drive assembly. With the supercharger belt removed, a failed one-way clutch within the pulley rotates freely in both directions. The supercharger drive assembly KR3Z-6J022-B is now available as a…
• 10208831Mar 3, 2022Electrical system, Transmission and drivetrain. 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…
• 10208146Feb 17, 2022Seats. Some 2017-2018 Focus/MKX/C-MAX, 2017-2019 MKC/Taurus/Flex/MKT, 2017-2020 Fusion/MKZ/Continental, 2017-2022 Mustang/Edge/Explorer/Police Interceptor Utility/Escape/F-150/F-Super Duty, 2018-2022 Expedition/Navigator, 2019-2022 Ranger/Nautilus, 2020-2022 Corsair/Aviator, and 2021-2022 Mustang Mach-E vehicles may exhibit a noisy, incorrectly operating, and/or inoperative seat motor. This may be due to a damaged or…
• 10205694Dec 23, 2021Equipment, Electrical system. 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…
• 10205526Dec 20, 2021Transmission and drivetrain. This article supersedes TSB 21-2315 to increase the labor operation time allowances. Some 2017-2020 F-150, 2018-2021 Expedition/Navigator/Mustang and 2019-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift.
• 10205726Dec 15, 2021Latches, locks and linkages. Certain 2015 – 2021 Model Year Mustang Convertible Vehicles Door Opens to Secondary Latch Position n some of the affected vehicles, a front door latch may open to the secondary latched position while driving. While the door is in the secondary latched position the driver will notice wind noise from the door and a door ajar warning will appear on the instrument cluster. This concern does not result in a fully…
• 10205482Dec 14, 2021Equipment. Some 2018-2021 Ford and Lincoln vehicles may exhibit inoperative remote features via the Ford Pass/Lincoln Way mobile app, incomplete user authorization, no modem electronic serial number (ESN) displayed or DTCs U2100 and/or B156D in the telematics control unit (TCU). These symptoms may persist even after performing a TCU software update and/or replacement. To correct this condition, start a new session with the…
• 10205528Dec 1, 2021Transmission and drivetrain. Some 2018-2021 Expedition/Navigator, 2018-2020 F-150/Mustang and 2019-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P163E stored in the powertrain control module (PCM) or transmission control module (TCM) after replacing the main control valve body.
• 10204040Nov 23, 2021Engine cooling. Some 2018-2021 EcoSport, Expedition, Navigator; 2019-2021 Ranger; 2020-2021 Escape, Corsair, Explorer, Transit; 2021 Bronco, Bronco Sport, Edge, Nautilus, F-150, Mustang; 2019-2022 Transit Connect; 2020-2022 Aviator, F-Super Duty; and 2022 Maverick vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P0496, P0456, P0455, P04F0, and/or P0451. Ford has tested…
• 10203656Nov 19, 2021Electrical 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…
• 10203650Nov 5, 2021Transmission and drivetrain, Engine cooling. Some 2020-2021 Mustang GT500 vehicles built on or before 30-June-2021 may exhibit a no crank/no start with 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.
• 10202707Oct 13, 2021Equipment, Electrical system, Transmission and drivetrain. 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.
• 10202705Oct 8, 2021Electrical system, Equipment. 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.
• 10201905Sep 28, 2021Transmission and drivetrain. Some 2017-2020 F-150, 2018-2021 Expedition/Navigator/Mustang and 2019-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift.
• 10201637Sep 24, 2021Transmission and drivetrain. Some 2020 Mustang GT350 - 2020-2021 Mustang Mach 1/Shelby GT500 vehicles may exhibit a rear differential fluid leak at the differential cooler line fittings. This may be due to a seal within the fittings. To correct the condition, follow the service procedure to replace both rear differential cooler line fittings.
• 10201620Sep 9, 2021Equipment, Transmission and drivetrain. 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.
• 10201579Sep 6, 2021Engine cooling, Fuel system. Some 2017-2021 Ford and Lincoln vehicles equipped with 3.3L, 3.5L EcoBoost, or 5.0L engines may exhibit stalling, lack of power, low fuel rail pressure and/or DTCs P0087 or P008A after a repair was made that required the removal of the fuel line that connects the high-pressure fuel pump to the port injection rail, such as injector replacements or base engine repairs. This line must be installed in the correct…
• 10201064Aug 31, 2021Transmission and drivetrain. Some 2020-2021 Mustang GT500 vehicles may exhibit a clatter noise/vibration in reverse (R) at 3-8 mph (5-13 km/h) and/or an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P175C, P175D, P175E, P0844, P0849 and/or P0874 set in the transmission control module (TCM). This may be due to the software in the TCM. To correct the condition, follow the Service Procedure steps to…
• 10201063Aug 31, 2021Transmission and drivetrain. Some 2020-2021 Mustang GT500 vehicles may exhibit a transmission fluid leak caused by improperly seated or cracked transmission cooler tubes attached to the transmission case. This may be due to the retaining bolts being cross threaded causing the seals to leak and/or crack the lines. If the threads in the transmission case that the cooler tube retaining bolts go into are damaged, it is not necessary to replace the…
• 10201050Aug 27, 2021Electrical 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…
• 10201034Aug 25, 2021Brakes. Some 2013-2021 Ford and Lincoln vehicles may exhibit noise when the brakes are applied. When diagnosing and repairing brake noise conditions, use the Workshop Manual (WSM) and the appropriate pinpoint test in section 206-00. The brake rotors should only be machined if directed by the WSM because one or more of the following conditions are present on the braking surface: scoring, excessive corrosion/rust or pitting…
• 10201019Aug 17, 2021Transmission and drivetrain. 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…
• 10201013Aug 16, 2021Electrical 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.
• 10200743Aug 10, 2021Electrical system, Equipment. 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.
• 10199536Jul 22, 2021Seats. Some 2013-2018 C-Max, 2013-2020 Fusion/MKZ, 2013-2021 Escape, 2015-2018 Focus, 2015-2019 MKC, 2015-2021 Edge/F150/Mustang, 2016-2018 MKX, 2016-2019 Explorer, 2017-2021 F-Super Duty, 2018-2021 EcoSport/Expedition, 2019-2021 Ranger/Nautilus, 2021 Bronco Sport/Mustang Mach-E vehicles may experience seat pan looseness, lateral movement, or a clunk/thump noise on turns. This may be due to the seat pan track. To correct…
• 10199522Jul 13, 2021Equipment. Some 2018-2021 Mustang coupe vehicles may exhibit a sagging headliner or gap where the headliner meets the upper door weatherstrip. This may be due to an outward bent door frame moulding not allowing the weatherstrip to overlap the headliner properly. To correct this condition, follow the Service Procedure to replace the door frame moulding.
• 10198640Jun 14, 2021Equipment. Some 2019-2021 Ford and Lincoln vehicles may exhibit an intermittent audio echo/robotic voice heard during a bluetooth phone call by the person that is not in the vehicle. Using Apple CarPlay and Android Auto instead of Bluetooth can help alleviate the concern. Also turning on, then off, the privacy setting in the SYNC touchscreen can temporarily alleviate the concern. Engineering is currently investigating this…
• 10198584Jun 2, 2021Transmission and drivetrain. Some 2021 Mustang vehicles equipped with a 5.0L engine and built on or before 11-Feb-2021 may exhibit an intermittent rough running drivability concern with an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTC) P0351, P0352, P0353 and/or P0354 stored in the powertrain control module (PCM). This may be due to a software parameter within the PCM. To correct the condition, follow the…
• 10194653May 28, 2021Body and structure, Equipment. Some 2021 Mustang Mach 1 vehicles equipped with the handling package and built on or before 25-Mar-2021 may have been shipped to dealers without a front splitter. The front splitter is a loose shipped item that should be installed during the pre-delivery inspection (PDI) process.
• 10194428May 24, 2021Transmission and drivetrain, 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…
• 10194425May 24, 2021Electrical system, Equipment. 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.
• 10194436May 18, 2021Body and structure, Equipment. Some 2020-2021 Mustang Shelby GT500 vehicles may exhibit a cracking on the hood inner panel. The crack is a cosmetic condition, not a structural concern. This may be due to a variation in production of the hood. To correct the condition, follow the Service Procedure to repair the hood crack.
• 10194433May 13, 2021Electrical system, Equipment. 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.
• 10194413May 12, 2021Electrical system, Other or unknown. 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.
• 10191525Apr 29, 2021Engine 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 (65à’C) or higher and engine speed is at idle up to approximately 1700 RPMs.
• 10191521Apr 28, 2021Back-over prevention (rear camera). 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…
• 10191174Apr 12, 2021Transmission and drivetrain. Some 2020-2021 Mustang GT500 vehicles may exhibit a transmission fluid leak caused by improperly seated transmission cooler tubes attached to the transmission case. If the threads in the transmission case that the cooler tube retaining bolts go into are damaged, it is not necessary to replace the transmission. These threads can be repaired. To correct the condition, follow the Service Procedure to repair these…
• 10189581Mar 25, 2021Electrical 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.
• 10187985Feb 16, 2021Transmission and drivetrain. Some 2020-2021 Mustang GT500 vehicles may exhibit various transmission related concerns and/or DTCs. In addition to following normal Workshop Manual (WSM) diagnostics, inspect C105, an inline connector next to the right side valve cover, for signs of pushed out terminals, terminal damage, or harness damage. If any pushed out terminals, terminal damage, or harness damage is found, repair as necessary.
• 10186652Jan 29, 2021Equipment, Electrical system, 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.
• 10186627Jan 26, 2021Equipment. Some 2021 Mustang Mach-E vehicles may exhibit a concern where the vehicle cannot be charged or does not charge properly when using the mobile charger. The blue status indicator light on the charger control box may not illuminate, may turn on and off intermittently, or may illuminate amber. This may be due to the connector which runs between the household outlet and the charger control box not being fully seated…

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