NHTSA recall 21V533000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V533000 |
| Manufacturer's number | 21S33 |
| Manufacturer | Ford Motor Company |
| Reported | 2021-07-15 |
| Owners notified | 2021-07-28 |
| Component | SERVICE BRAKES, HYDRAULIC |
| Units potentially affected | 56 |
| Part numbers | ML34-2D335-AR |
| Report | Annual report 3, for 2025 quarter 3 to 2026 quarter 2 |
|---|---|
| Filed with NHTSA | 2026-07-18 |
| Vehicles in the campaign | 56 |
| Reported remedied | 30 (53%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2026 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
Ford Motor Company (Ford) is recalling certain 2021 F-150 vehicles. The electronic brake booster may leak brake fluid into the electronic control unit, which could result in reduced braking performance.
What can happen
Reduced braking performance can increase the risk of a crash.
The remedy
Dealers will replace the electronic brake booster assembly, free of charge. Owner notification letters were mailed on July 28, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S33.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
| 2021 FORD F-150 |
|---|
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| ITRM-26.DC F-150 | 2026-09-11. Over-the-air update. 26C10 Recall remedy -Addresses instances where the trailer lights and trailer brakes may not function |
|---|---|
| SSM 54940 | 2026-06-22. Service bulletin. Some 2021-2026 F-150 vehicles may exhibit a U2100:00 diagnostic trouble code (DTC) for initial configuration incomplete stored in the trailer control module (TRM). This may be due to the vehicle having a Ford accessory trailer brake kit installed without being programmed following the included instructions. If the vehicle was built with minor feature code FDDAA and a trailer brake gain switch is present in the stock location in the instrument panel, a Ford Accessory trailer brake kit has been installed on the vehicle. If a Ford Accessory trailer brake kit is present, download and run the "TRM - Towbar Configuration" application using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool. To confirm a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS). |
| ITRM-26.B04 F-150 | 2026-05-01. Over-the-air update. 26C10 Recall remedy -Addresses instances where the trailer lights and trailer brakes may not function |
| SSM 54401 | 2025-12-01. Service bulletin. Some 2021-2025 F-150 vehicles may exhibit a stuck in park condition with no diagnostic trouble codes (DTCs). This may be due to connector C211 pin push out on circuit CCB61 or an open on circuit CCB61 between the antilock brake system (ABS) module and the body control module (BCM). Workshop Manual (WSM), Section 307-05 Automatic Transmission External Controls > Diagnosis and Testing > External Controls - Pinpoint Test for "Stuck In Park" has been updated with improved diagnostics. Refer to revised WSM sections for normal diagnosis. |
| TSB 25-2397 | 2025-09-03. Service bulletin. This article supersedes TSB 22-2214 to update labor times from M-time to AP-time and add a limit. Some of the vehicles listed in the model statement above may exhibit at least one of the following conditions: - "Reverse Brake Assist Unavailable" message displayed in the instrument panel cluster (IPC) with missing active guide lines in the reverse camera display - Diagnostic trouble code (DTC) U0415:86 stored in the IPMA This may be due to a software issue with the anti-lock brake system (ABS) module. |
| TSB 25-2380 | 2025-08-26. Service bulletin. This article supersedes TSB 22-2448 to update the Service Procedure and the labor times from M-time to AP-time and add a limit. Some of the vehicles listed in the Model statement above may exhibit an illuminated anti-lock brake system (ABS) indicator and stability-traction control indicator with diagnostic trouble code (DTC) C1013:09 stored in the ABS module. This may be due to software in the ABS module. |
| TSB 25-2276 | 2025-06-24. Service bulletin. This article supersedes TSB 25-2045 to update the production fix date and add model years. Some of the vehicles listed in the Model statement above equipped with a console gear shift module (GSM) may exhibit at least one of the following conditions: * Clicking sound coming from shifter after it is placed and kept in reverse, neutral or drive position (2024 only) * Shifter will not shift out of park/into park * Shifter will not shift out of gear * Shifter will not stow/unstow * Shifter will move past the park position * Loose shifter lever arm at pivot * Illuminated powertrain malfunction (wrench) indicator * DTC P0929:77, P0929:00, P0929:07 and/or P0929:9A This may be due to a faulty GSM and/or connector C211 pin push out on circuit CCB61 or an open on circuit CCB61, between the anti-lock brake system (ABS) module and the body control module (BCM). Note: If the gear shifter lever will not shift into park, the transmission will automatically shift into park when the return to park function is triggered. |
| SSM 51590 | 2023-05-16. Service bulletin. Some 2021-2022 F-150 vehicles equipped with light duty electric park brake calipers (minor feature code FAJAK) may exhibit a squeal noise from the rear brakes after sitting for 8 hours or more. To confirm a vehicle is built with minor feature code FAJAK, review the build information by double-clicking the vehicle identification number in the upper left-hand corner in the Professional Technician System (PTS). To correct this condition, replace rear brake disc (ML1Z-2C026-C) and rear brake pads, caliper pin bolts, and brake pad holding clips (ML3Z-2200-E) on both sides of the vehicle. Refer to Workshop Manual Section 206-04 Rear Disc Brake. For claiming, use causal part number 2552 and applicable labor times from Section 02 of the Service Labor Times Standard Manual. NOTE: Using incorrect service parts on the braking system could impair brake performance. |
| SSM 51471 | 2023-04-05. Service bulletin. Some 2021-2022 F-150 vehicles equipped with light duty electric park brake calipers (minor feature code FAJAK) may exhibit a squeal noise from the rear brakes after sitting for 8 hours or more. To confirm a vehicle is built with minor feature code FAJAK, review the build information by double-clicking the vehicle identification number in the upper left-hand corner in the Professional Technician System (PTS). To correct this condition, replace rear brake disc (ML1Z-2C026-C) and rear brake pads, caliper pin bolts, brake pad clips, and retraction springs (ML3Z-2200-E) on both sides of the vehicle. Refer to Workshop Manual Section 206-04 Rear Disc Brake. For claiming, use causal part number 2552 and applicable labor times from Section 02 of the Service Labor Times Standard Manual. NOTE: Using incorrect service parts on the braking system could impair brake performance. |
| SSM 51402 | 2023-04-04. Service bulletin. Some 2021-2022 F-150 vehicles equipped with light duty electric park brake calipers (minor feature code FAJAK) may exhibit a squeal noise from the rear brakes after sitting for 8 hours or more. To confirm a vehicle is built with minor feature code FAJAK, review the build information by double-clicking the vehicle identification number in the upper left-hand corner in the Professional Technician System (PTS). To correct this condition, replace rear brake disc (ML14-2A315-BC) and rear brake pads, caliper pin bolts, brake pad clips, and retraction springs (ML3Z-2200-E) on both sides of the vehicle. Refer to Workshop Manual Section 206-04 Rear Disc Brake. For claiming, use causal part number 2552 and applicable labor times from Section 02 of the Service Labor Times Standard Manual. NOTE: Using incorrect service parts on the braking system could impair brake performance. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.