Service bulletin SSM 54878
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11033258 |
| Published by NHTSA | 2026-06-03 |
| Manufacturer's number | SSM 54878 |
| Manufacturer's date | 2026-05-27 |
| NHTSA component | ELECTRICAL SYSTEM; UNKNOWN OR OTHER |
| Manufacturer's system | audio system |
NHTSA's summary
Some 2024-2026 Nautilus non-hybrid and 2025-2026 Aviator vehicles equipped with 28 radio speakers (minor feature code IDBBN) and 2025-2026 Navigator vehicles may exhibit a no audio/sound condition with no communication with the audio digital signal processing module (DSP) with U0238 stored in the audio control module (ACM). This may be due to the DSP. To determine if the DSP is the root cause, remove the DSP fuse from the battery junction box (BCMC fuse F40 for Aviator, BCMC fuse F138 for Nautilus, BJB fuse F5 for Navigator). Inspect the fuse for an open and make sure the fuse has proper blade contact. After one minute, reinstall the good fuse. If the concern is still present or a fuse concern is found, refer to Workshop Manual (WSM), Section 415-00 for normal diagnostics. If communication has been re-established with the DSP, install a new DSP ordered from Ford Component Sales using the On-Line 1878 form to correct this condition. Refer to Workshop Manual (WSM), Section 415-00. For claiming, use causal part 18B849 and labor operations 12651D and 12651D13.
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
Electrical system
Trouble codes named
U0238
| LINCOLN AVIATOR | 2025, 2026 |
|---|---|
| LINCOLN NAUTILUS | 2024, 2025, 2026 |
| LINCOLN NAVIGATOR | 2025, 2026 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V165000 | 2026-03-18. ELECTRICAL SYSTEM:ADAS; BACK OVER PREVENTION:SOFTWARE |
|---|---|
| 26V104000 | 2026-02-20. EXTERIOR LIGHTING:TAIL LIGHTS; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL |
| 25V343000 | 2025-05-23. EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER; ELECTRICAL SYSTEM |
| 25V337000 | 2025-05-23. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| SSM 55241 | 2026-10-13. Service bulletin. Some 2025-2027 Aviator vehicles may exhibit a "Door Fault Service Required", "Transmission Not In Park" and/or "Hill Start Assist Not Available" message in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) B1262:92 stored in multiple door latch control modules (DCME, DCMF, DCMG, and/or DCMH). DTC U0504 may also be stored in the gearshift module (GSM). This may be due to the software in the door latch control modules. To correct this condition, download and run the following applications using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool.<br /> "DCME - Door Control Module E (DCME) Software Update"<br /> "DCMF - Door Control Module F (DCMF) Software Update"<br /> "DCMG - Door Control Module G (DCMG) Software Update"<br /> "DCMH - Door Control Module H (DCMH) Software Update"<br /> For claiming use causal part 54219A65 and labor operation MT54219SSM up to 0.5 hours. |
|---|---|
| SSM 55220 | 2026-10-12. Service bulletin. Some 2024-2026 Nautilus and 2025-2026 Explorer/Aviator/Expedition/Navigator vehicles may experience Android Auto connection or general Bluetooth pairing concerns for both Android and IOS after an APIM software update. This may be due to the APIM software. To temporarily correct the issue:<br /><br /> * For Android Auto related issues: Clear Android Auto app storage in the center display screen. Vehicle Settings > Settings > Apps > Android Auto > Clear Storage. <br /> * For general Bluetooth connectivity issues: Clear Contacts Storage app storage in the center display screen. Vehicle Settings > Apps > Uncheck hide system apps > Contacts Storage > Clear Storage.<br /><br /> If the condition persists, perform a master reset from the center display screen, remove the vehicle from the phone, then re-pair the device.<br /><br /> If the condition continues to persist, refer to Workshop Manual (WSM), Section 415-00 for normal diagnostics and repair as necessary outside of this article.<br /><br /> If the condition is resolved, inform customers that engineering is currently working on a permanent solution |
| TSB 26-2325 | 2026-10-05. Service bulletin. Some of the vehicles listed in the Model statement above may exhibit a front courtesy lamp that is inoperative. This may be due to a concern with the front courtesy lamp light module. |
| DDM-PDM-26.21.7 Exped&Nav | 2026-10-02. 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 |
| DSM-26.5.7.2 Exped&Nav | 2026-10-02. Over-the-air update. Quality improvements include: -Steering column memory calibration update to minimize unnecessary contact with mechanical hard stops |
| TSB 26-2358 V2 | 2026-10-01. Service bulletin. Some of the vehicles listed in the Model statement above equipped with one-touch up/down windows may exhibit a condition where a 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. |
| SSM 55208 | 2026-09-30. Service bulletin. Some 2024-2026 F-150, 2025 Explorer/Aviator, 2025-2026 Expedition/Navigator, or 2026 F-Super Duty vehicles may exhibit diagnostic trouble code (DTC) U211B:43:48 stored in the body control module (BCM) when performing a Self-Test. This DTC sets due to an internal BCM timing issue during the self-test process. This specific code has no customer impact and does not cause any drivability concerns or warning messages. Clearing DTC U211B:43:48, reprogramming the BCM, or replacing the BCM is unlikely to prevent this DTC from setting. This DTC does not trigger a condition covered under warranty. Note: This guidance only applies to U211B with the specific failure byte 43 in status 48. Any other trusted real-time operation network (TRON) DTCs or different failure bytes associated with U211B are still applicable and technicians must follow Workshop Manual (WSM) normal diagnostics for those DTCs. |
| SSM 55198 | 2026-09-30. Service bulletin. Some 2025-2027 Navigator vehicles equipped with multi-contour seats (minor feature code BYBAL) may exhibit a condition where the second-row seat does not return to the latched position (under power) after pressing the power return button (located on the outboard side of the seatback). 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). This may be caused by an occupant pulling the manual release strap. The manual release strap is intended to be used in emergency situations only where power seat operation is not available. Pulling the manual release strap disengages the seat pitch motor clutch. To correct the condition, the seat pitch motor clutch must re-engage with the seating system. Starting with the seat in the rearward position, press the power seat pitch button once and release it. While the seat is in motion, gently guide the headrest and seatback downward, moving the seat approximately halfway down toward the strikers (without |
| SSM 55194 | 2026-09-30. Service bulletin. Some 2021-2024 Mustang Mach-E, 2025-2026 Navigator and 2024 F-150 vehicles may exhibit inoperative welcome/approach detection lights. This may be due to the body control module (BCM) software. To correct the condition, download and run the "BCM - Programmable Module Installation (PMI)" application using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool. If the condition persists after PMI, refer to Workshop Manual (WSM), Section 417-01 for normal diagnostics and repair as necessary outside of this article. For claiming, use causal part 15604 and labor operations 12651D and BCM. |
| RCM-26.AD Expedition&Navi | 2026-09-28. Over-the-air update. Quality improvements include: -Restraints Control Module update to implement robust power-on reset logic. |