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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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Only bulletins with component: Body and frame are shown. Show all

Bulletins, newest first
SSM 546012026-02-27. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY; UNKNOWN OR OTHER. Ford and Lincoln vehicles equipped with wired keyless entry keypad systems and accessory wireless keyless entry keypad systems may or may not come with a wallet card containing the master code. Unlike the integrated wired keypad, the accessory wireless keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool or from the label printed on the body control module (BCM). The Factory Keyless Entry Code application within the diagnostic scan tool will not provide an applicable master code for the accessory wireless keypad. If the wallet card for an accessory keypad is not available, the "Wireless RF Keypad Diagnosis Guide" can be referenced and provides direction on how to retrieve the master code. This guide is located under the Workshop Manual tab > Accessories > Installation > Wireless RF Keypad Diagnosis Guide > PPT C > Step C2.<br /><br /> Note: The only available keypad for some vehicles from the assembly plant is the accessory wireless keyless entry keypad. The integrated wired keypad cannot be installed on vehicles not equipped from the factory with a wired keyless entry k
21N10 S12023-12-05. Service bulletin. LATCHES/LOCKS/LINKAGES; STRUCTURE:BODY:DOOR. Certain 2015 – 2021 Model Year Mustang Convertible Vehicles - Door Opens to Secondary Latch Position
TSB 23-23342023-11-03. Service bulletin. EQUIPMENT; STRUCTURE:BODY:DOOR. This article supersedes TSB 21-2220 to update the model years affected and part list. Some 2018-2024 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.
SSM 515362023-05-04. Service bulletin. STRUCTURE. For 2000-2024 Ford and Lincoln vehicles, swapping a module from a vehicle for diagnosis purposes is likely to cause errors and is not recommended. It is also not recommended to order a replacement module using a vehicle identification number (VIN) from a different vehicle. Most modules on these affected vehicles are VIN/vehicle specific and hardware variations between modules do exist. Swapping a module from a vehicle or ordering a module using a different vehicle/VIN can cause ineffective repairs and additional vehicle down time. Make sure all appropriate Workshop Manual (WSM) procedures are followed when diagnosing the condition prior to all module replacements and only order modules using the correct VIN.
TSB 22-22422022-06-27. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY:ROOF AND PILLARS. Some 2015-2022 Mustang vehicles may exhibit a water leak onto the front carpet that originates from the either the left or right A-pillar. This may be due to a detached A-pillar body seal. Follow the service procedure to repair the vehicle.
TSB 21-21552021-06-03. Service bulletin. STRUCTURE:BODY:HOOD; 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.
SSM 498372021-06-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; 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. For more information, access the following dealership communication located on FMCDealer.com by copying and pasting the following link into a web browser https://www.fmcdealer.dealerconnection.com/content/fmcdealer/en/us/edc/2021/qafmm1p5321.html. The communication can also be found by navigating to the dealer communications page on FMCDealer.com. On the 'Dealer Communication' page, select 'May 2021' in the Month/Year category. Scroll down to 'May 3, 2021' and click on the link 'Q&A: 2021 Ford Mustang Mach 1 Part'.

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