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Service bulletin SSM 54579

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 id11028846
Published by NHTSA2026-02-17
Manufacturer's numberSSM 54579
Manufacturer's date2026-02-16
NHTSA componentSTRUCTURE:BODY

NHTSA's summary

2025-2026 Expedition XL vehicles that are equipped as a Special Service Vehicle (SSV) (minor feature code TDAGZ) will not open or close the power liftgate/tailgate by pressing the button on the key fob. Additionally, these vehicles may exhibit a symptom where the horn does not sound when the key fob lock button is pressed. Expedition XL vehicles equipped as a SSV have the rear liftgate/tailgate power open/close feature omitted from being operated via the key fob. Pressing the key fob liftgate/tailgate button only locks/unlocks the rear cargo area. The power lift feature will power open/close if the button is pressed on the gate within 45 seconds of pressing the key fob. This functionality cannot be modified and no repairs should be attempted. The Workshop Manual (WSM) has been updated. Refer to WSM, Section 501-03 > Description and Operation > Body Closures System Operation and Component Description and scroll to the section titled Power Liftgate - SSV (Special Service Vehicle) Operation. The Digital Owner's Manual is in process of being updated.

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

Body and frame

Vehicles listed
FORD EXPEDITION2025, 2026

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

Other bulletins for the same vehicles and component
DDM-PDM-26.21.7 Exped&Nav2026-10-02. Over-the-air update. Quality improvements include: -Software update to improve responsiveness of the door control system after the vehicle enters a low-power state
SSM 550052026-07-14. Service bulletin. 2025-2026 Expedition/Navigator vehicles equipped with power running boards do not deploy the running boards in auto mode when the easy entry/exit setting for "Approach Detection" is toggled on. This is a change from prior models. Currently, easy entry/exit settings in the vehicle's center display screen incorrectly indicates that power running boards will deploy during approach detection in auto mode. This will be corrected in a future Digital Experience over-the-air (OTA) update which will begin deploying in mid Q3, 2026. The Workshop Manual (WSM) and Owner's Manual have been corrected to explain proper operation of power running boards.
26B112026-07-01. Other. Certain 2025 Model Year Expedition and Navigator Vehicles Front and Rear Door Paint Correction and Upper Moulding Isolator Installation
SSM 549102026-06-15. Service bulletin. Some 2025-2026 Expedition/Navigator vehicles equipped with one-touch up/down front windows may exhibit a condition where a front window does not respond to one-touch controls, does not open all the way and/or bounces back when using the one-touch close function. Advise the customers that driver door module (DDM) and passenger door module (PDM) software updates are currently being delivered to vehicles over-the-air (OTA), which are expected to resolve these symptoms. It is important to advise the customer to select the automatic updates option in the settings menu to enable automatic updates and/or approve prompts to download or install updates if automatic updates are purposely disabled. Monitor Professional Technician System (PTS) for additional information.
SSM 548882026-06-09. Service bulletin. Some 2025-2026 Expedition/Navigator vehicles built on or before 10-Mar-2026 and equipped with power autofold exterior mirrors may exhibit concerns with the passenger mirror not automatically folding in or out at times, while the driver side mirror automatically folds properly. This may be due to the software in the driver door module (DDM) and passenger door module (PDM). To correct the condition, reprogram the DDM and PDM using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool. For claiming, use causal part 14B291 and labor operation MT14B291SSM up to 0.4 hours.
SSM 548002026-05-14. Service bulletin. Some 2025-2026 Explorer/Aviator and 2026 Expedition/Navigator vehicles may exhibit an intermittent inoperative remote start feature using either the key fobs or the Ford/Lincoln App. This may be due to the software in the body control module (BCM). After replicating the concern, use the Ford Diagnosis and Repair System (FDRS) to monitor the RMTSTRT_F_ARB_LST and RMTSTRT_F_TRGT_NM parameter identification (PIDS) in the BCM. If both PID values show "true" in any of the last 5 saved values, engineering is currently working on a solution for this condition that is expected in Q4 2026. Schedule service appointments for customers once the repair becomes available. If either of the BCM PID values do not show "true" in any of the saved values, refer to Workshop Manual (WSM), Section 501-14 Handles, Locks, Latches, Entry Systems > Diagnosis and Testing > Locks, Latches and Entry Systems > Pinpoint Test R (Explorer/Aviator)/Pinpoint Test V (Expedition/Navigator) for normal diagnostics and repair as necessary outside of this article. For claiming, use causal part 15604 and labor operations 12651D and 12651D45
PDM -26.21.5 Expedition2026-04-30. Over-the-air update. Quality improvements include: -Prevents window bounce backs after using the one touch up feature
TSB 26-21902026-04-28. Service bulletin. This bulletin supersedes 26-2154 to update the labor operation numbers. Some of the vehicles listed in the Model statement above may exhibit a concern where both the liftgate and tailgate open when commanded by the fob when the liftgate only opening feature is enabled through the touchscreen controls. This may be due to the software in the rear gate trunk module (RGTM).
BCM-26.230.0 Expedition2026-04-17. Over-the-air update. Quality improvements include: -Addresses instances where the rear right hand door may fail to unlock when using the passive entry feature
TSB 26-21542026-04-14. Service bulletin. Some of the vehicles listed in the Model statement above may exhibit a concern where both the liftgate and tailgate open when commanded by the fob when the liftgate only opening feature is enabled through the touchscreen controls. This may be due to the software in the rear gate trunk module (RGTM). This may be due to the software in the rear gate trunk module (RGTM).