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Service bulletin SSM 50184

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 id10202622
Published by NHTSA2021-10-29
Manufacturer's numberSSM 50184
Manufacturer's date2021-10-08
NHTSA componentPOWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS:ACTUATORS/SOLENOIDS

NHTSA's summary

Some 2021 Bronco/F-150/Explorer/Aviator/Police Interceptor Utility vehicles, excluding hybrid, may exhibit harsh or delayed engagement/shift concerns. Most concerns may be addressed with the PCM/TCM Transmission Accelerated Main Control Break In Routine. Refer to Workshop Manual (WSM), Section 307-01, DTC Chart and/or Diagnosis By Symptom to identify the clutch(s) to be cycled. This routine cycles the shift solenoids and clutch control valves to remove contamination that may be sticking the valves and must be performed along with an adaptive drive cycle before attempting internal service. Although this routine was developed for low mileage vehicles, its usage is being expanded for various symptoms across the life of the vehicle.For claiming, use causal part 7A100 and applicable labor operations in Section 7 of the Service Labor Time Standards (SLTS) Manual.

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, Automatic transmission

Vehicles listed
FORD BRONCO2021
FORD EXPLORER2021
FORD EXPLORER POLICE INTERCEPT2021 (the catalog's model; the bulletin names a series or trim of it)
FORD F-1502021
LINCOLN AVIATOR2021

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

Recalls for the same vehicles and component
26V4020002026-06-24. POWER TRAIN:AUTOMATIC TRANSMISSION
26V2360002026-04-14. POWER TRAIN:AUTOMATIC TRANSMISSION
25V1690002025-03-14. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
23V1990002023-03-24. PARKING BRAKE:ELECTRICAL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
23V0690002023-02-10. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
22V1880002022-03-25. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

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 24-20972024-04-04. Service bulletin. Some 2021-2022 F-150 non-Lightning vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator and Service Vehicle Soon message in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) U031D in the powertrain control module (PCM) and no other drivability concerns. This may be due to the configuration of the PCM.
SSM 523712024-04-04. Service bulletin. Some 2021-2022 F-150 non-Lightning vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator and Service Vehicle Soon message in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) U031D in the powertrain control module (PCM) and no other drivability concerns. This may be due to the configuration of the PCM. To correct this condition, run the PCM - Disable Pro Trailer Hitch Assist application using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool.
SSM 523492024-04-04. Service bulletin. Some 2021-2023 F-150 vehicles may exhibit DTC C0604:00 stored in the powertrain control module (PCM) and may have an Active Air Dam System Fault See Manual message displayed in the instrument panel cluster (IPC). To correct this condition, clear and retest for the DTC C0604:00. If DTC C0604:00 returns, refer to Workshop Manual (WSM) Section 501-19 Bumpers, Diagnosis and Testing for additional diagnosis.
SSM 523422024-03-20. Service bulletin. Some 2022-2024 Broncos Raptors built on and before 13-Feb-2024 and 2021-2024 Broncos equipped with a 2.3L EcoBoost engine may exhibit an illuminated MIL with ignition system DTC(s) P0352, P0353, P0354, P0355, P0357, P2303, P2306, P2309, P2312, P2318, P2304, P2307, P2310, P2313, P2319, and/or P2322 set in the powertrain control module (PCM). This may be due to incorrect cylinder to DTC mapping within the PCM. This means the DTCs listed may set against the incorrect cylinder. Even though the cylinder to DTC mapping is incorrect in the PCM, the presence of these DTCs means that a real ignition system concern is present that requires diagnosis and repair. Prior to performing a pinpoint test for one of the listed DTCs, it will be necessary to identify the correct cylinder that has the issue. Do this by using the Ford diagnosis and repair system (FDRS) to perform a cylinder power balance test. If the results show two cylinders dropping out, begin diagnosing the ignition system components for the cylinder that is dropping out and not setting an ignition related DTC. Due to the incorrect cylinder to DTC mapping
SSM 522442024-02-14. Service bulletin. Some 2021-2023 F-150 vehicles equipped with a 3.5L PowerBoost hybrid engine, 2020-2023 Explorer vehicles equipped with a 3.3L hybrid engine and 2020-2023 Aviator vehicles equipped with a 3.0L hybrid engine may exhibit a malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0A1E stored in the powertrain control module (PCM) and auto start/stop disabled. This may be due to a loose wiring connection to the belt integrated starter generator (BISG). The Workshop Manual (WSM) has recently been updated to provide new direction for DTC P0A1E. Refer to the WSM, Section 303-06 Starting System, Diagnosis and Testing, Starting System for applicable diagnosis.
OTA23PU0630YAW2024-02-07. Service bulletin. Software Update 23-PU0630-YAW-RT for 2021 MY F-150 vehicles is now available. Quality Improvements include: -Correct the Generator voltage desired (GENVDSD) parameter identification (PID) missing from the powertrain control module (PCM) PID list in the Ford Diagnosis And Repair System (FDRS) scan tool. Refer TSB 23-2154 - Robustness action in operation of vehicle to detect low-state-of-charge battery and prevent potential engine stall, as well as provide improved warning to customers when low-state-of-charge conditions exist. - Robustness action to prevent potential line pressure drift DTC P084B from setting. - Eliminate potential ABS Yaw Rate Calibration issue. - Robustness action to alleviate the Nuisance SSN (Stop Safely Now) mesage from setting and vehicle should operate as expected in the next Key Start event - Eliminates potential Emergency Parking Brake activation when wire harness experience a short.
SSM 521972024-01-30. Service bulletin. Some 2021-2024 Bronco vehicles equipped with 4x4 with part time engagement and built on or before 12-Jan-2024 may exhibit a condition of the vehicle being stuck in neutral tow mode. This may be due to a concern with the all-wheel drive (AWD) module software. Make sure the proper procedure is being followed to exit neutral tow mode by referring to the Owner's Manual > Towing Your Vehicle > Recreationally Towing Your Vehicle. Make sure the vehicle's battery is fully charged and then diagnose all diagnostic trouble codes (DTCs) in the AWD module. Refer to Workshop Manual (WSM), Section 307-07A. If diagnostics do not resolve the concern or there are no DTCs present in the AWD module, reprogram the AWD module using the latest software level of the Ford Diagnosis and Repair System (FDRS) diagnostic scan tool. Refer to the appropriate section of the WSM. Once the repair is complete, verify the vehicle's ability to successfully enter and exit neutral tow mode by cycling the vehicle in and out of neutral tow mode a minimum of two times, allowing the vehicle to enter sleep mode (key-off for at least 5 minutes) be
TSB 23-24292024-01-05. Service bulletin. This article supersedes TSB 23-2363 to add 2021-2022 vehicle model years, update the symptom and the causal part. Some 2021-2023 F-150 vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P084B stored in the powertrain control module (PCM). This may be due to the software level of the PCM. To correct this condition, perform the Service Procedure below to reprogram the PCM to the latest software level via the Ford Diagnosis and Repair System (FDRS).
SSM 519612023-11-03. Service bulletin. Some 2021-2023 Bronco vehicles may exhibit an illuminated MIL with DTCs P0096 and/or P007B in the powertrain control module (PCM), which may be more prevalent in high ambient air temperatures. For vehicles that meet this criateria, inspect the front of the vehicle for the presence of an aftermarket bumper and/or accessories which may restrict air flow to the charge air cooler and surrounding sensors. Remove the aftermarket accessory and return the vehicle to stock and reevaluate. If the concern returns with the stock bumper/accessories removed, proceed to normal Workshop Manual diagnostics.
SSM 517642023-07-03. Service bulletin. Some 2020-2023 Explorer/Aviator vehicles equipped with a 3.0L EcoBoost may exhibit an illuminated malfunction indicator lamp (MIL) and low oil pressure warning in the instrument panel cluster (IPC), with diagnostic trouble codes (DTC) P0521 and/or P0524 in the powertrain control module (PCM). This condition may be caused by an internal oil pressure leak. If pinpoint test E in the Workshop Manual (WSM) Section 303-01B directs you to the replacement of the oil pump, upon reassembly inspect that the main oil gallery tube (6718) is assembled and aligned properly on the back of the engine front cover. The engine oil gallery seal (00815) must be replaced any time the front cover is removed (per WSM Section 303-01B). The WSM front cover removal and installation procedure is in the process of being updated.