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Manufacturer communication · Service campaign

Western Star service campaign SF716

Western Star filed this with NHTSA as a service campaign dated May 23, 2025, received Jun 4, 2025, about the engine — 3 documents under this number: SF716-OWN LTR, SF716-DLR LTR, SF716-Bulletin. It names 3 model years (2024–2025). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.

What the bulletin says

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

Field Service Campaign for DEF Regen Inhibit Dash Switch Indicator

Manufacturer campaign id SF716 Kind Service campaign Manufacturer date May 23, 2025 Received by NHTSA Jun 4, 2025 Components Engine

Documents filed under this number

DocumentKindDatedNHTSA idAt NHTSA
SF716-OWN LTRService campaignMay 23, 202511019131not yet checked
SF716-DLR LTRService campaignMay 23, 202511019129not yet checked
SF716-BulletinService campaignMay 23, 202511019121not yet checked

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.

Model years it names

Source: as the manufacturer filed them

Also filed against: 2025 Western Star 47X; 2024 Western Star 49X; 2025 Western Star 49X.

None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.

Common questions

Source: NHTSA, 49 CFR 579.5

Is Western Star SF716 a recall?

No. A service campaign 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.

Is the SF716 repair free?

A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.

Which vehicles does SF716 cover?

The manufacturer filed it against 3 model years: 2025 Western Star 47X, 2024 Western Star 49X, 2025 Western Star 49X. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.