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Service bulletin SF661_V2

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10235656
Published by NHTSA2023-05-04
Manufacturer's numberSF661_V2
Manufacturer's date2023-04-20
NHTSA componentVEHICLE SPEED CONTROL

NHTSA's summary

Revised Freightliner and Western Star Field Service Campaign for Freightliner and Western Star Trucks with Cummins Engines, Cruise Control Indicator Light

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

Throttle and cruise control

Vehicles listed
FREIGHTLINER 108SD2022, 2023
FREIGHTLINER 114SD2022, 2023
FREIGHTLINER CASCADIA2022, 2023
WESTERN STAR 47X2022 to 2023
WESTERN STAR 49X2022 to 2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
ICI24-0072024-03-06. Service bulletin. Important Campaign Information letter for SF669 Campaign Suspended
SF6692024-01-05. Service bulletin. Field Service Campaign for Adaptive Cruise Control
SF6612023-04-07. Service bulletin. Revised Field Service Campaign for Freightliner & Western Star Trucks with Cummins Engines - Cruise Control Indicator Light
SF6612022-12-03. Service bulletin. Field Service Campaign for Freightliner and Western Star Trucks w Cummins Engines - Cruise Control Indicator Light
SS3109-FTL20222022-10-04. Service bulletin. Service Solution for New Cascadia Low PowerComplaint. When additional floor heat insulation is ordered, the throttle pedal in some cases (when the throttle is fully depressed) may not reach 100% (full throttle). This can also occur if aftermarket floor mats are added to the vehicle.
5089712022-03-04. Service bulletin. Notice for certain vehicles: Due to the way in which this vehicle was configured, the vehicle does not display the Cruise Control telltale on the instrument cluster when the Cruise Control system is turned On. All other Cruise Control functionality works as intended, including the driver’s ability to disable Cruise Control by engaging the brakes.