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Manufacturer communication · Service bulletin

Lincoln bulletin SSM 55051

Lincoln filed this with NHTSA as a service bulletin dated Jul 28, 2026, received Aug 3, 2026, about the electrical system. It names 3 model years (2025–2027). 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.

What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

Some 2025-2027 Navigator vehicles equipped with multi-contour seats (minor feature code BYBAL) may exhibit a "Seat cannot lock, Do not use" warning message for second row seats without any relevant diagnostic trouble codes (DTC) stored. The second row seat(s) may also exhibit a rattle noise while driving from one of the seat latches without a warning message. This may be due to one of the power seat latches losing its learned home position. To relearn the home position, start with the seat down and latched. Press and hold the power return button on the seat back for at least 5 seconds. Release the return button. Wait 20 seconds, then confirm proper power pitch and stow operation of the affected seat. Road test the vehicle above 5 MPH (8 km/h) to confirm the warning light and/or rattle concern is resolved. For claiming, use causal part 7863161 and labor operations 12651D and 12651D45. If the concern persists, refer to Workshop Manual (WSM), Section 501-10B for normal diagnostics and repair the vehicle outside of this article. To confirm a vehicle is built with a certain minor feature code, r

Kind Service bulletin Manufacturer date Jul 28, 2026 Received by NHTSA Aug 3, 2026 Components Electrical System, Unknown Or Other, Seats

Document filed under this number

DocumentKindDatedNHTSA id
SSM 55051Service bulletinJul 28, 202611035511

The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it at a service desk; it is what the dealer’s system is keyed on.

Model years it names

Source: as the manufacturer filed them

A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.

Common questions

Source: NHTSA, 49 CFR 579.5

Is Lincoln SSM 55051 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 55051 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 55051 cover?

The manufacturer filed it against 3 model years: 2027 Lincoln Navigator, 2026 Lincoln Navigator, 2025 Lincoln Navigator. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.