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Service bulletin SF623

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 id10200700
Published by NHTSA2021-08-31
Manufacturer's numberSF623
Manufacturer's date2021-08-30
NHTSA componentELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; POWER TRAIN

NHTSA's summary

Field Service Campaign for Cascadia ICUC Traffic Sign Display. Certain vehicles equipped with a Detroit Assurance base package, and a DT12 transmission with intelligent powertrain management (IPM+), were not built with the Traffic Sign Display (TSD) option.

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

Driver assistance, Electrical system, Transmission and driveline

Vehicles listed
FREIGHTLINER CASCADIA2021

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

Recalls for the same vehicles and component
26V5830002026-09-09. ELECTRONIC STABILITY CONTROL (ESC); SERVICE BRAKES, AIR:ANTILOCK
23V2990002023-04-26. ELECTRONIC STABILITY CONTROL (ESC)
23V0730002023-02-10. ELECTRONIC STABILITY CONTROL (ESC); SERVICE BRAKES, AIR:ANTILOCK:MODULATOR
22V8170002022-11-01. SERVICE BRAKES, AIR:ANTILOCK:MODULATOR; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
20213992021-06-25. Electrical
21V4810002021-06-25. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
20211742021-03-24. Powertrain
21V2090002021-03-24. POWER TRAIN:CLUTCH ASSEMBLY
20V7420002020-11-30. POWER TRAIN:CLUTCH ASSEMBLY

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
TEM-11-000012026-08-03. Other. Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
TSB-42-080-FTL2026-08-03. Service bulletin. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Updated frequently asked questions.
TSB-26-057-FTL2026-06-01. Service bulletin. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
CXA 04_26_Side Guard2026-05-02. Other. CX Advocate for P4 Side Guard Assist On/Off Menus and Trailer Functionality (TSB-54-381-FTL)
ICI26-0062026-05-02. Other. Important Campaign Information for SF706 - Revised, Reactivated
SF706-DLR LTR2026-05-02. Service bulletin. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
SF706-Bulletin2026-05-02. Service bulletin. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
FleetCom 1_Solenoid2026-05-02. Other. Fleet Communications for solenoid issues
ICI26-0032026-04-02. Other. Important Campaign Information letter for SF706 - campaign suspended
FleetCom_SF7062026-03-04. Other. Fleet Communications for SF706 - Cascadia axle conversion