Lincoln bulletin SSM 54978
What it saysSome 2024-2026 Nautilus 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… NHTSA’s full summary ↓
Lincoln filed this with NHTSA as a service bulletin dated Jul 1, 2026, received Jul 8, 2026, about the electrical system. It names 3 model years (2024–2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSome 2024-2026 Nautilus 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. "DCME - Door Control Module E (DCME) Software Update" "DCMF - Door Control Module F (DCMF) Software Update" "DCMG - Door Control Module G (DCMG) Software Update" "DCMH - Door Control Module H (DCMH) Software Update" For claiming use causal part 58219A65 and labor operation MT58219SSM up to 0.5 hours.
Trouble codes it names: B1262 U0504
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 54978 | Service bulletin | Jul 1, 2026 | 11034852 | PDF, 73 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 3 model years this bulletin names have filed 75 complaints with NHTSA since 2015. 11 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
During a short drive between and roughly 27 miles, the red battery light on the dash display illuminated just as we were turning into the Holiday/Circle K gas station in . No other warnings or messages appeared on the dash, and upon restart after returning to the vehicle, the red battery light did not reappear.
2025 Lincoln Nautilus · Electrical System · filed with NHTSA Aug 28, 2026
The door jam and hatchback seals are letting dust and emission fumes inside the vehicle. When driving down a dirt road the seats are covered with dust. The dealership says that the seals are properly installed they said to the cabin fan on high to pressurize the vehicle which has not helped.
2024 Lincoln Nautilus · Structure · filed with NHTSA Mar 14, 2026
The contact owns a 2024 Lincoln Nautilus. While the vehicle was parked, the rear hatch unexpectedly opened and struck a building, causing the taillight to crack and leaving scratches and a crack on the bumper.
2024 Lincoln Nautilus · Electrical System · filed with NHTSA Apr 23, 2026
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group71 other manufacturer communications filed against the Lincoln Nautilus under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Lincoln list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26B19 | Other | Aug 31, 2026 | Recommended Repair Prior to Sale Customer Satisfaction Program 26B19 2024-2025 MY Nautilus 2.0L Hybrid Vehicles Powertrain Control Module… |
| SSM 55116 | Service bulletin | Aug 25, 2026 | Some of the following vehicles: * 2025-2026 Expedition/Navigator built on or after 02-Feb-2025 * 2025-2026 F-Super Duty built on or after 0… |
| PHX-26.2.0.11 | Over-the-air update | Aug 11, 2026 | 26S51 Recall remedy: -Accessory Protocol Interface Module update to mitigate the loss of the pedestrian warning sound |
| SSM 55071 | Service bulletin | Aug 5, 2026 | Some 2025-2026 Aviator/Explorer/Expedition/F-150/Mustang Mach-E/Navigator vehicles may exhibit the hands-free BlueCruise feature intermitten… |
| SSM 55031 | Service bulletin | Jul 23, 2026 | Some 2021-2026 Ford/Lincoln vehicles may exhibit various symptoms including but not limited to the auto start/stop system not operating as i… |
| SSM 55019 | Service bulletin | Jul 17, 2026 | Some 2024-2025 Nautilus vehicles may exhibit an intermittent false alarm activation. This may be due to the software in the body control mod… |
| ECG-26.2.11.4.1 | Over-the-air update | Jul 8, 2026 | Quality improvements include: - Enhanced system performance, disk usage limits and memory monitoring |
| TSB 26-2297 | Service bulletin | Jun 24, 2026 | Some of the vehicles listed in the model statement above equipped with SYNC4 may experience a blank center display screen or black center di… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Lincoln, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Lincoln SSM 54978 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the SSM 54978 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does SSM 54978 cover?
The manufacturer filed it against 3 model years: 2026 Lincoln Nautilus, 2025 Lincoln Nautilus, 2024 Lincoln Nautilus. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.