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Service bulletin SSM 52548

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11000297
Published by NHTSA2024-05-23
Manufacturer's numberSSM 52548
Manufacturer's date2024-05-18
NHTSA componentPOWER TRAIN

NHTSA's summary

Various vehicles equiped with 10R80/10R80 MHT/10R100/10R140 transmissions may require replacement of the seal kits (7153) when internal repairs are being performed. These kits come with 4 wheel drive (4WD) seals and will no longer include the 2WD seals. When working on a 2WD vehicle, any 2WD seals must be ordered separately. Refer to the parts catalog for the proper 2WD seals required.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
FORD EXPEDITION2018, 2019, 2020, 2021, 2022, 2023, 2024
FORD EXPLORER2020, 2021, 2022, 2023, 2024, 2025
FORD F-1502017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
FORD F-250 SD2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
FORD F-600 SD2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
FORD F-650 INCOMPLETE CHASSIS2024 (the catalog's model; the bulletin names a series or trim of it)
FORD F-650 SD2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-650 SD2025 (the catalog's model; the bulletin names a series or trim of it)
FORD F-750 SD2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
FORD MUSTANG2018, 2019, 2020, 2021, 2022, 2023, 2024
FORD RANGER2019, 2020, 2021, 2022, 2023
FORD TRANSIT2020, 2021, 2022, 2023, 2024
LINCOLN AVIATOR2020, 2021, 2022, 2023
LINCOLN NAVIGATOR2018, 2019, 2020, 2021, 2022, 2023, 2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20263112026-06-24. Powertrain
26V4020002026-06-24. POWER TRAIN:AUTOMATIC TRANSMISSION
20262802026-06-09. Powertrain
26V3750002026-06-09. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
26V3710002026-06-09. POWER TRAIN:AUTOMATIC TRANSMISSION
20261892026-04-15. Powertrain
26V2370002026-04-14. POWER TRAIN:AUTOMATIC TRANSMISSION
20257072025-12-18. Powertrain
20256912025-12-12. Powertrain
25V8630002025-12-12. POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:PARK PAWL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB 26-2375 v22026-10-13. Service bulletin. NOTE: This bulletin has been updated, refer to the change log at the bottom for details. Issue: Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: • Poor shift quality • Illuminated powertrain malfunction (wrench) indicator with DTCs P2704 and P0771 stored in the PCM / TCM . This may be due to a calibration in the TCM and/or wear between the input shaft and the E clutch hub causing theinput shaft O-rings to become damaged resulting in an open E clutch circuit. Action: For vehicles that meet all of the criteria in the Issue and Model statements, follow the Service Procedure toreprogram the PCM / TCM and/or replace the E clutch hub and input shaft O-rings
SSM 552182026-10-06. Service bulletin. For 20202026 vehicles equipped with the 10R140 transmission, a new Transmission Clutch Circuit Leak Test has been introduced in the Ford Diagnosis and Repair System (FDRS). This test utilizes the pressure and vacuum transducer (PVT) when available. Workshop Manual (WSM) updates related to this diagnostic procedure are planned for release in Q4 2026. The new test improves the accuracy of detecting leaks within transmission fluid circuits and replaces the previous air check method. The previous air check procedure has been shown to produce a high rate of false positives, which may lead to unnecessary repairs when no actual leak is present. Accordingly, the air check procedure is not to be used for diagnosing internal transmission hydraulic leaks or as justification for transmission replacement.
TSB 26-2088 v22026-10-05. Service bulletin. This bulletin supersedes 24-2249. Reason for update: update the claim quantity of the torque converter nuts, part number and claim quantity of the front support assembly bolt washers, and part number change of the fluid pan from the Parts List. Reissued 01-Oct-2026 - Added LC3Z-7G091-B to the part list
25E10-S12026-10-02. Other. 25E10-S1 Owner letter
TSB 26-24082026-09-30. Service bulletin. This bulletin supersedes 26-2309. Reason For Update: update the Model section to remove Aviator 10R80, update the Parts list to add 3.3L to W520514-S440, and add L1MZ-7Z490-G valve body separator plate for Aviator. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: * Harsh 3-4, 4-5 upshifts * Harsh 5-3, 4-3 downshifts * Harsh reverse engagements These symptoms may be worse when cold. This may be due to the F clutch friction plates brinelling into the clutch and planetary container cylinder (7B177).
TSB 26-22522026-09-12. Service bulletin. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: Poor shift quality Illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P2704 and P0771 stored in the powertrain control module (PCM)/transmission control module (TCM) This may be due to the software in the TCM (diesel only) and/or sticking valves in the main control valve body and/or damaged E clutch friction plates and E clutch steel plates. Additional model information: 6.7L Diesel Engine 7.3L Gas Engine 10R140 Automatic Transmission
TSB 26-23952026-09-01. Service bulletin. This article supersedes 26-2287. Reason for update: update the labor operation numbers to add MT to operations C, F, G, H, J, K, L and M, and correct the part number LIMZ-4A015-B to L1MZ-4A015-B. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: Harsh engagement Delayed engagement Harsh shift Delayed shift Illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC)s P0751, P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0771, P0772, P2700, P2701, P2702, P2703, P2704, P2705, P2707, P2708, P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F6 and/or P07F7 stored in the powertrain control module (PCM) or transmission control module (TCM). This may be due to axial movement of the CDF clutch cylinder sleeve causing hydraulic circuit leaks. NOTE: If internal transmission service is required to address a concern detected with the CDF clutch cylinder following this article, technicians should carefully inspect and replace other transmission components and flush transmission fluid cooler only as ne
TSB 26-23752026-08-19. Service bulletin. This article supersedes TSB 26-2050 to increase the labor operation allowance of labor operations A and B. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Poor shift quality Illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2704 and P0771 stored in the PCM/TCM. This may be due to a calibration in the TCM and/or wear between the input shaft and the E clutch hub causing the input shaft O-rings to become damaged resulting in an open E clutch circuit. Additional model information: 6.7L Diesel Engine 2022-2024 F-550 or F-600 F-Super Duty vehicles built on or before 15-May-2024 with over 5,000 miles (8,000km)
PT-26.13.13 F-150 Ltng2026-08-18. Over-the-air update. 25C69 Recall remedy - Updates the Secondary On-Board Diagnostic Module C to provide for release of the Integrated Park Module slider in the event a bind condition occurs allowing park to be engaged
TSB 26-23602026-08-10. Service bulletin. Some of the vehicles listed in the Model Statement above may exhibit an intermittent extended crank with no relevant diagnostic trouble codes (DTCs) present. This may be due to various software parameters in the powertrain control module (PCM).