Service bulletins for the 2022 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.
389 on file from NHTSA, as of 2026-10-19.
By type
By component
| SB54-348 | 2022-02-05. Service bulletin. POWER TRAIN. Meritor Rear Axle Temperature Parameters On Cascadia vehicles equipped with Meritor drive axles, the high temperature warning parameter is set too low for some applications, for vehicles equipped with synthetic oil, and for certain conditions that are not harmful to the axle. |
|---|---|
| CALFTL49-004 | 2022-02-05. Service bulletin. ENGINE AND ENGINE COOLING. Exhaust Pipe and Cab Support Bracket Interference |
| MYCOM_120921-1 | 2022-01-05. Service bulletin. VISIBILITY. Cascadia Sleeper Dome Light Shortages |
| SB26-054 | 2022-01-04. Service bulletin. POWER TRAIN. DT12 Transmission Control Harness Chafing the Transmission Control Module. Classic and New Cascadia vehicles equipped with DT12 transmissions, built from approximately January 2017 to mid-March 2021, may experience rubbing/chafing on the chassis harness near the transmission. |
| CALFTL54-021 | 2022-01-04. Service bulletin. ELECTRICAL SYSTEM. Positive Battery Load Disconnect Switch Back-of-Cab (BOC) Installation. |
| SS3083-FTL2021 | 2021-12-02. Service bulletin. SUSPENSION. Service Solution for Aero Height Control Interfering with RDF Alignment. The Aerodynamic Height Control feature on the New Cascadia is a feature that raises and lowers the air suspension with relation to vehicle speed in order to reduce drag and achieve better fuel efficiency. The Hadley Smart Valve (HSV) is the module that makes this possible by applying and exhausting air from the rear axle suspension as necessary. |
| SF630 | 2021-12-02. Service bulletin. LANE DEPARTURE. Field Service Campaign for Cascadia Lane Assist Software. Certain vehicles may experience the loss of Active Lane Assist (ALA) while driving due to decreased sensitivity of the steering wheel, with no visible indicator to the operator. ALA is an accessory system and the driver controlled steering function including power steering is not affected. |
| ICI21-034 | 2021-12-02. Service bulletin. LANE DEPARTURE. Important Campaign Information letter for SF630 – Revised and Reactivated Bulletin. This letter is to inform you that campaign SF630, Cascadia Lane Assist Software, will be reactivated with revised work instructions Monday, 11/15/21. Please print and use the revised bulletins for all work under SF630 from this point forward. |
| CALFTL54-020 | 2021-12-02. Service bulletin. ELECTRICAL SYSTEM. Customer Advisory Letter for Battery Load Disconnect Switch Installation. These work instructions cover replacing the battery cable access (BCA), installing a battery load disconnect switch, and installing a harness between the new BCA and battery load disconnect switch. |
| ICI21-031 | 2021-11-03. Service bulletin. LANE DEPARTURE. SF630 Campaign Suspended. This letter is to inform you that campaign SF630, Cascadia Lane Assist Software, will be suspended today Friday, 10/22/21. On 10/22/21 you will see SF630 marked as 'Suspended' in OWL. It has been determined that a change in the procedure is necessary. A second Important Campaign Information letter will be posted when the changes have been made and the campaign is reactivated. |
| CTP1Updates | 2021-10-06. Service bulletin. EQUIPMENT. DetroitConnect follow-up customer communication for certain vehicles unable to complete over the air updates including parameters and DDEC over the air. |
| CTP1Updates | 2021-10-06. Service bulletin. EQUIPMENT. DetroitConnect customer communication for certain vehicles unable to complete over the air updates including parameters and DDEC over the air. |
| MYCOM_091321-3 | 2021-10-06. Service bulletin. EQUIPMENT. My Communication for Detroit Connect Over the Air Issue Update. This is an update for the previously communicated Over the Air functionality issue on CTP1s. We are currently testing a solution for the issue that is affecting these CTP1 telematics devices. While testing is not complete initial results are promising. The solution will require a soft ware update which is currently planned for October/November. |
| SS3091-FTL 2021 | 2021-09-29. Service bulletin. LANE DEPARTURE. Service Solution for Damaged SGA Wires at GrabHandle Located on Right A Pillar. The field had reported failed VRDU modules related to wires damage for the SGA. |
| SS1034216 | 2021-08-31. Service bulletin. FORWARD COLLISION AVOIDANCE. Service Solution for Detroit Assurance Radar Front End Shipping Label. It has been reported that in some cases shipping labels may have been affixed to the inside center of the front cover on aftermarket parts. The shipping label has since been moved to the outer edge of the front cover, which should not affect the RDF's ability to properly sense obstacles located in front of the vehicle. |
| FAB289 | 2021-08-31. Service bulletin. EQUIPMENT. Freightliner Action Bulletin for Cascadia Sleeper Cabinet Options. Improved cabinet options in sleeper models to increase storage and customize to the driver’s liking. |
| CALFTL42-005 | 2021-08-31. Service bulletin. SERVICE BRAKES, HYDRAULIC. Customer Advisory Letter for Inspection of Steer Axle Drum Brake Spider Fasteners. |
| MYCOM_032521-2 | 2021-08-30. Service bulletin. SUSPENSION. Cascadia Rear Suspension Ride Height Update In an effort to clearly identify the AirLiner rear suspension ride height, and to align with future suspension offerings, the ride height data codes (see module 621) changed in SpecPro as of 3/11/21 for Cascadia models. This change does not affect the ride height of your spec, it clarifies the ride height within the data code. For example, if a customer uses a 40,000# AirLiner suspension today with the 621-007(AirLiner High Position Ride Height) that spec will be updated to use 621-118 (7.9" nominal ride height). |
| MYCOM_032521-1 | 2021-08-30. Service bulletin. UNKNOWN OR OTHER. Freightliner and Western Star Production Schedule Update Freightliner Cascadia & Western Star 4700, 49X and 5700XE Production Schedule Update We recently communicated to our Freightliner Trucks dealer distribution network the rolling production delays for medium-duty truck models built at our Mount Holly and Santiago Truck Manufacturing Plants(TMP). The effects of the COVID-19 pandemic continue to impact global semiconductor supply chains and the prolonged duration of these shortages have reached our heavy-duty truck supply chain as well. |
| SB54-347 | 2021-08-28. Service bulletin. VISIBILITY. Freightliner Service Bulletin for Rain Sensor not Detecting Material on the Windshield. The rain light sensor (RLS) requires proper mounting and clear windshield visibility for auto wipe to function properly. It is always recommended when checking for proper operation of the RLS, that the sensor be properly fastened to its mounting bracket and that the gel is free of fingerprints and foreign material. Also ensure that no air bubble larger than 1 mm is present in the gel. |
| SB54-345 | 2021-08-28. Service bulletin. POWER TRAIN. Freightliner Service Bulletin for Detroit New Final Drive (NFD) Rear Axle Temperature Parameters. Some New Cascadia trucks equipped with Detroit Diesel New Final Drive (NFD) axles have a high temperature warning parameter. The warning is set too low for some applications, and under certain conditions that are not harmful to the axle, the high temperature warning will appear on the dash and indicate an error requiring service. |
| SS3085FTL-2021 | 2021-08-28. Service bulletin. EQUIPMENT. Service Solution for Cummins PTO functionality error software level 81Z-006. Cascadia/Western Star 49X with Cummins engines combined with software level 81Z-006. A programming bug in the central gateway (CGW) for software level 81Z-006 will not allow completion of the preset #2 PTO engine speed. During PTO speed request for anything greater than the #1 set speed , if the Cummins ECU software determines that the increase in speed isn't ramping fast enough, it will refer to an engine torque control setting instead of the engine speed control setting. |
| SF622 | 2021-08-28. Service bulletin. SERVICE BRAKES, HYDRAULIC. Revised Field Service Campaign for Cascadia/49X ABS MBSP+ Controller Software Update. REVISION: The work instructions have been revised. Certain vehicles have a WABCO Anti-Lock Braking System (ABS) controller that logs excessive 629-11 fault codes which subsequently lead to additional downstream fault codes. |
| ICI21-027 | 2021-08-28. Service bulletin. SERVICE BRAKES, HYDRAULIC. Important Campaign Information Letter for SF622 – Campaign Revision/Reactivation. This letter is to inform you that the work instructions for Field Service Campaign SF622, Cascadia/49X ABS MBSP+ Controller Software Update have been revised. |
| CALFTL54-018 | 2021-08-28. Service bulletin. ELECTRICAL SYSTEM. Customer Advisory Letter for New Cascadia Aluminum Battery Cable Replacement. This customer advisory letter is intended to provide parts for inspection by DTNA Engineering to finalize a technical solution for an upcoming recall: FL893/NHTSA 21V-481. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.