Service bulletin WSB-07
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11027971 |
| Published by NHTSA | 2026-02-02 |
| Manufacturer's number | WSB-07 |
| Manufacturer's date | 2026-01-12 |
| Campaign id or software version | WSB-07 |
| NHTSA component | ELECTRICAL SYSTEM; ENGINE |
NHTSA's summary
Tiffin issued a technical service bulletin to change the alternator in the Open Trail Motorhome due to a firmware update by Lithionics to change the secondary alternator charging threshold from 800 to 1200 RPMs.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system, Engine
| TIFFIN OPEN TRAIL | 2026 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.