Daimler Truck service campaign SF735
What it saysRevised Field Service campaign for Adaptive Cruise Control (ACC): Cummins Medium Duty Engines NHTSA’s full summary ↓
Daimler Truck filed this with NHTSA as a service campaign dated Sep 3, 2026, received Mar 4, 2026, about the vehicle speed control — 7 documents under this number: SF735-DLR LTR (3 filings), SF735-Bulletin (3 filings), SF735-OWN LTR. It names 4 model years across Freightliner and Western Star (2026). 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.
One page for every brand it was filed under. Each brand’s bulletins: Freightliner · Western Star.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
Revised Field Service campaign for Adaptive Cruise Control (ACC): Cummins Medium Duty Engines
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SF735-DLR LTR | Service campaign | Sep 3, 2026 | 11037998 | PDF, 2,061 KB |
| SF735-Bulletin | Service campaign | Sep 3, 2026 | 11037997 | PDF, 2,061 KB |
| SF735-DLR LTR | Service campaign | Mar 12, 2026 | 11030499 | PDF, 1,711 KB |
| SF735-Bulletin | Service campaign | Mar 12, 2026 | 11030494 | PDF, 1,711 KB |
| SF735-OWN LTR | Service campaign | Feb 27, 2026 | 11029532 | PDF, 1,605 KB |
| SF735-DLR LTR | Service campaign | Feb 27, 2026 | 11029530 | PDF, 1,605 KB |
| SF735-Bulletin | Service campaign | Feb 26, 2026 | 11029527 | PDF, 1,605 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.
Model years it names
Source: as the manufacturer filed themFreightliner 3 model years
Also filed against: 2026 Freightliner 108SD; 2026 Freightliner 114SD; 2026 Freightliner Business Class M2.
Western Star 1 model year
Also filed against: 2026 Western Star 47X.
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.
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Freightliner and Western Star, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Daimler Truck SF735 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 SF735 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 SF735 cover?
The manufacturer filed it against 4 model years across 2 brands (Freightliner and Western Star): 2026 Freightliner 108SD, 2026 Freightliner 114SD, 2026 Freightliner Business Class M2, 2026 Western Star 47X. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built 13 Jan 2025 – 6 Jun 2025 — the build date is on the certification label in the driver’s door jamb.