Freightliner service campaign SF706
What it saysRevised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD) NHTSA’s full summary ↓
Freightliner filed this with NHTSA as a service campaign dated Apr 15, 2026, received Mar 4, 2026, about the power train — 4 documents under this number: SF706-DLR LTR (2 filings), SF706-OWN LTR, SF706-Bulletin. It names 4 model years (2021–2024). 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 communicationRevised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SF706-DLR LTR | Service bulletin | Apr 15, 2026 | 11031972 | PDF, 22,241 KB |
| SF706-OWN LTR | Service campaign | Feb 16, 2026 | 11029516 | PDF, 25,718 KB |
| SF706-DLR LTR | Service campaign | Feb 16, 2026 | 11029515 | PDF, 25,718 KB |
| SF706-Bulletin | Service campaign | Feb 16, 2026 | 11029509 | PDF, 25,718 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 themAlso filed against: 2021 Freightliner Cascadia; 2022 Freightliner Cascadia; 2023 Freightliner Cascadia; 2024 Freightliner Cascadia.
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.
More bulletins about the power train
Source: same model, same component group1 other manufacturer communication filed against the Freightliner Cascadia under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SF725 | Service campaign | Apr 10, 2026 | Field Service campaign for Differential Lock Buzzer |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Freightliner, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Freightliner SF706 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 SF706 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 SF706 cover?
The manufacturer filed it against 4 model years: 2021 Freightliner Cascadia, 2022 Freightliner Cascadia, 2023 Freightliner Cascadia, 2024 Freightliner Cascadia. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.