Service bulletins for the 2021 Freightliner Cascadia
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.
509 on file from NHTSA, as of 2026-10-19.
By type
By component
| ICI23-003 | 2023-02-02. Service bulletin. ENGINE AND ENGINE COOLING. Important Campaign Information Letter for DDC D21M6, Termination Date Extended |
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| SF660 | 2023-01-06. Service bulletin. STEERING. Field Service Campaign for Drag Link Tapered Joint |
| MYCOM_11012022 | 2022-12-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. My Communications for SF625 and SF657 Pre-Flashed USB Tools. The download files for SF625 and SF657 are no longer available in our download center. In order to perform these updates you will need to order the Pre-Flashed USB tools from the PDC. This will allow for a more efficient and timely service. |
| SS3113-FTL2022 | 2022-11-02. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Service Solution for DPF Harness Rub-Chafe onTrans-Wire Braided Air Hose. |
| SS3112-FTL2022 | 2022-11-02. Service bulletin. LANE DEPARTURE. Service Solution for Detroit Side Object Detection Harness Rub-Chafe on Bracket |
| SS3109-FTL2022 | 2022-10-04. Service bulletin. VEHICLE SPEED CONTROL. 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. |
| SF657 | 2022-10-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Revised Freightliner and Western Star CTP Software Update REVISION: New tools are required. The USB stick with SF657 software already loaded, along with the USB stick to CTP adaptor harness that is On-the-Go (OTG) protocol compliant, now have part numbers that can be purchased through the parts distribution center (PDC). |
| SB54-359 | 2022-10-04. Service bulletin. ELECTRICAL SYSTEM. Freightliner Service Bulletin for ABS mBSP ECU Software Update Fault Code 629-11. New Cascadia vehicles manufactured from September 12, 2018 through March 22, 2021 that are equipped with WABCO Anti-Lock Braking System (ABS) controllers log excessive 629-11 fault codes, which can lead to additional downstream fault codes. The ABS controller will receive a software update to eliminate erroneous fault codes and ensure proper function. |
| SB54-357 | 2022-10-04. Service bulletin. POWER TRAIN. Freightliner Service Bulletin for Resetting the Maintenance System for DT12 Oil Changes. This service bulletin describes required maintenance system parameter changes that apply to New Cascadia vehicles with Detroit DT12 transmissions used for line haul applications. |
| ICI22-044 | 2022-10-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Important Campaign Information Letter for SF657 – Revised Bulletin. Newest Revision: A screenshot of the DiagnosticLink screen showing in Fig.15 showing 'Activation OK' must be kept on file with the repair order. This letter is to inform you that tools are now required for the SF657 repair, and the work instructions have been updated. |
| SF630 | 2022-09-07. Service bulletin. LANE DEPARTURE. Revised Field Service Campaign for Cascadia Lane Assist Software. |
| SS3108-FTL2022 | 2022-09-01. Service bulletin. EQUIPMENT. Service Solution for MS01T Maintenance System FaultCode Diagnosis |
| SS3107-FTL2022 | 2022-09-01. Service bulletin. EQUIPMENT. Service Solution for New Cascadia Replacing Common Telematics Platform (CTP) 1 With a CTP2 |
| CALFTL26-002 | 2022-09-01. Service bulletin. POWER TRAIN. Customer Advisory Letter for Eaton Endurant Transmissions Require Oil Coalescing Air Dryer Cartridges |
| SS3076-FTL2022 | 2022-08-02. Service bulletin. VISIBILITY. Main Mirror Arm Covers Loose - Falling Off. Lower arm covers designs have clips that hold the cover on but over time the clips can fail and allow the covers to become loose or fall off. |
| SB54-356 | 2022-08-02. Service bulletin. VISIBILITY. Revised Freightliner Service Bulletin for HVAC Software Updates. Description of Revisions: This bulletin replaces the version dated 06/21/2022. Formatting errors have been corrected. |
| SF657 | 2022-07-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Field Service Campaign for Freightliner and Western Star CTP Software Update |
| SB54-356 | 2022-07-02. Service bulletin. VISIBILITY. Freightliner Service Bulletin for HVAC Software Updates |
| SS3102-FTL2022 | 2022-06-04. Service bulletin. FUEL SYSTEM, GASOLINE. Service Solution for 100/120/130 Gallons Fuel Tanks interference/rubbing with fairing bracket. |
| SF611REV2 | 2022-06-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Revised Field Service Campaign for Cascadia CTP Reset. Certain vehicles equipped with DTNAs proprietary Common Telematics Platform (CTP) are not communicating; therefore they are unable to benefit from over-the-air software updates. The CTP will be reset and some will also be initialized. |
| SB54-348 | 2022-06-04. Service bulletin. POWER TRAIN. Updated Freightliner Service Bulletin for Meritor Rear Axle Temperature Parameters. This bulletin replaces the version dated 1/22/2022. The build date in General Information has been added. |
| ICI22-020 | 2022-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Important Campaign Information for DDC D21M6 - Third Revised Bulletin. This letter is to inform you that a revised bulletin for DETROITTM Field Service Campaign D21M6 - Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits is available on DTNAConnect. |
| D21M6REV3 | 2022-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Revised Detroit Field Service Campaign for Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits. |
| SS1034428-FTL22 | 2022-05-03. Service bulletin. FORWARD COLLISION AVOIDANCE. Service Solution for Cummins Engine andWABCO OnGuard (Obtaining Cruise When AdaptiveCruise Is Interrupted). Interruption of the forward radar system results in loss of both standard and adaptive cruise functions. The OnGuard system will recover (self-heal), once the issue goes away, but the drivercannot get Adaptive Cruise Control functional until the ignition switch is cycled. Applies to all New Cascadia vehicles built with Cummins engines and WABCO OnGuard. |
| FP60-055 | 2022-05-03. Service bulletin. VISIBILITY. Freightliner Parts Technical Bulletin for TufGlass Windshield Replacement. Effective April 20, 2022, owners of New Cascadia vehicles have the option of replacing factory-installed standard windshields with L20 TufGlass windshields. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.