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Service bulletin SF601

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 id10176267
Published by NHTSA2020-06-11
Manufacturer's numberSF601
Manufacturer's date2020-06-10
NHTSA componentSTEERING

NHTSA's summary

Field Service Campaign for Cascadia Steering Servos. On certain Cascadia vehicles, the current steering gear servo drive system does not allow vehicles to update to the latest software version. The steering gear servo drive will be replaced with a new drive, which includes the latest software, and the steering will be recalibrated

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

Steering

Vehicles listed
FREIGHTLINER CASCADIA2020

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

Recalls for the same vehicles and component
20230832023-02-20. Steering
23V1050002023-02-20. STEERING:LINKAGES:DRAG:LINK:CONNECTION
20215452021-09-02. Steering
21V6890002021-09-02. STEERING:LINKAGES:DRAG:LINK:CONNECTION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
FleetCom_Pwr Steer Res2026-01-08. Other. Fleet Communications for Power Steering Resevoir - NTF Replacements
FleetCom_Bosch Steer Gear2025-12-05. Other. Fleet communications for Bosch Steering Gear Replacements
PB33-004-FTL2025-07-08. Service bulletin. Parts Bulletin for Tie Rod Assembly Part Breakdown
CXA 3_25_SAS01T to SAS03T2025-04-02. Other. CX Advocate for SAS01T to SAS03T replacement (TSB54-373-FTL, TSB54-097-WST)
TSB54-373-FTL2025-03-04. Service bulletin. Technical Service Bulletin for SAS01T to SAS03T Replacement Information
SS3163-FTL2025-01-29. Other. Service Solution for Power Steering Reservoir Fill Cap Venting
ICI23-0102023-04-07. Service bulletin. Important Campaign Information letter communicating that SF660 Field Service Campaign is Replaced by FL967.
SF660A2023-02-04. Service bulletin. Revised Field Service Campaign for Drag Link Tapered Joint
SF6602023-01-06. Service bulletin. Field Service Campaign for Drag Link Tapered Joint
CALFTL32-0102021-02-27. Service bulletin. Customer Advisory Letter for New Cascadia Front Steer Arm – Drag Link Ball Joint Connection Inspection.