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Service bulletins for the 2020 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.

661 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
02.2020 Campaign2020-03-04. Service bulletin. EQUIPMENT. Open recall and Field service Campaigns report send out to Dealers, General Managers, Service managers and warranty managers
P4HalogenEnhance2020-03-04. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Customer Maintenance Enhancements for the P4 Halogen Lamp replacement procedure.
DRVRFacingCamera2020-03-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. DASH letter to dealers on updating the driver facing camera to improve captured video quality. The concern only impacts the quality of video captured and transmitted to the SafetyDirect Portal during an Active Brake Assist event or driver requested video recording.
SB54-3292020-03-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Service Bulletin for Electrical Wall Chart and VPDM Cover on New Cascadia with Detroit Assurance 5.0 and Multi-Purpose Camera 2.
CALHIGHCURRENT2020-03-03. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. Customer Advisory Letter that an inspection to determine if the high current breaker has been bypassed.
SF5942020-02-20. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. Field Service Campaign for Cascadia Fuel Water Separator Dash Wiring. On certain vehicles, the fuel water separator harness was not installed at the factory.
SF5982020-02-15. Service bulletin. BACK OVER PREVENTION. Field Service Campaign for Cascadia Backup Alarms. On certain, vehicles the backup alarm will not sound when the headlights are in the ON position. The software controlling the backup alarm will be updated.
SF5972020-02-15. Service bulletin. ELECTRICAL SYSTEM. Field Service Campaign for Freightliner Cascadia Passenger-Side Dome Light. Certain Freightliner Cascadia vehicles may have an inoperable dome light which normally activates upon opening the right-side (passenger) door. Vehicles will be inspected by opening the right-side (passenger) door, and if dome light is inoperable, a modification will be made to the wiring harness.
SB54-3242020-02-15. Service bulletin. EXTERIOR LIGHTING; VISIBILITY. Service Bulletin for certain New Cascadia equipped with Detroit Assurance 5.0, may have been ordered incorrectly without automatic headlamps and rain sensing wipers. If equipped with Detroit Assurance 5.0, daytime running lights (DRL), no exterior sun visor, and no cruise control options that disengage with the headlights or wipers, the automatic headlamps and wipers can be retrofitted.
SB54-2902020-02-15. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin for Guidelines for Repairing or Replacing an Electrical Harness. Use the guidelines in this bulletin to determine if a damaged electrical harness should be repaired or replaced.
WP20-001REV2020-02-15. Service bulletin. POWER TRAIN; LANE DEPARTURE; SUSPENSION; EQUIPMENT. Revision to a Warranty Policy Letter announcing the One Stop Supplier Extended Program Launch. The One Stop Supplier Extended Program streamlines the claim filing process because with One Stop Supplier Extended, the service network will file claims for some supplier-supported coverages in OWL. Revisions are in blue.
20CSA-022020-02-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Customer Service Announcement reminding service locations to update their DiagnosticLink software. To maintain access to the Detroit server, all DiagnosticLink computers must be updated with the current version of DiagnosticLink software. all DiagnosticLink 8.08 installed versions will be disabled as of Tuesday, January 28, 2020.
20CSA-012020-02-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING. Customer Service Announcement for a policy change regarding Detroit Service Information Bulletins (SIBs) will now have a 60-day expiration, starting on the release day of the bulletin. The intent of a SIB is to notify the service network of a major change to one or more service procedures. Do not save SIBs nor reference them for repairs, as they are uncontrolled and never updated.
CALFTL31-002REV2020-02-01. Service bulletin. TRAILER HITCHES; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Revised Customer Advisory Letter for performing a Fifth Wheel Air-Operated Kingpin Release Functionality Inspection on vehicles equipped with a dash controlled fifth wheel air operated king pin release valve. This revision updates the Standard Repair Times (SRTs) in the work instructions section.
CALFTL31-0022020-01-22. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; TRAILER HITCHES:FIFTH WHEEL ASSEMBLY. Customer Advisory Letter for performing a Fifth Wheel Air-Operated Kingpin Release Functionality Inspection on vehicles equipped with a dash controlled fifth wheel air operated king pin release valve.
WP20-0012020-01-21. Service bulletin. UNKNOWN OR OTHER; POWER TRAIN; SUSPENSION; LANE DEPARTURE. Warranty Policy Letter announcing the One Stop Supplier Extended Program Launch. The One Stop Supplier Extended Program streamlines the claim filing process because with One Stop Supplier Extended, the service network will file claims for some supplier-supported extended coverages in OWL.
SS10340682020-01-19. Service bulletin. ELECTRICAL SYSTEM. Service Solution for Meritor Wabco OnGuard Radar Service Alignment. If the radar sensor needs to be aligned, the radar sensor mounting system has become damaged or has loosened, or new radar sensor software has been installed, a Radar Sensor Service Alignment will need to be performed.
CALFTL54-0062020-01-19. Service bulletin. VISIBILITY; EXTERIOR LIGHTING. Customer Advisory Letter for New Cascadia vehicles with Detroit Assurance 5.0 regarding automatic headlamp and wiper retrofits.
SB83-1192020-01-17. Service bulletin. VISIBILITY. Service Bulletin for A/C system receiver-drier replacement guidelines.
SB54-2902020-01-17. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin on guidelines for repairing or replacing an electrical harness.
17TS-12REV2020-01-03. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Technical Service Letter for GHG17 Heavy Duty Engine Platform 1-BOX Aftertreatment System (ATS) Wire Harness experiencing chaffing caused by vibration and dirt collecting in the harness conduit.
WI19-0222020-01-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM. Warranty Information Letter announcing Detroit NOx Sensor Circuit Improvements for GHG17 After Treatment Systems
SB60-1552019-12-20. Service bulletin. STRUCTURE. Service Bulletin for Water Leak at the Top of a Cab Door, Cascadia Day Cab with FE13 Roof Fairing. Some Cascadia day cabs with FE13 roof fairings may be more susceptible to water intrusion into the cab at the top of the cab door due to the way the air flows around the FE13 fairing. Water is pushed past the door seals while the vehicle is in motion, possibly resulting in water intrusion.
SB54-3232019-12-20. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service Bulletin for New Cascadia Pana-Pacific 540 Radio Controls Not Operating Normally. Pana-Pacific DEA540 radios (A22-74389-000) may cease to respond to volume control settings from the steering wheel switches or the controls on the radio faceplate, resulting in erratic volume control.
SB54-3222019-12-20. Service bulletin. EQUIPMENT; VISIBILITY. Service Bulletin for Adjusting Automatic Temperature Control Range with Optimized Idle. Front and rear HVAC systems operate as independent constant outlet temperature control (COTC) systems when Optimized Idle (OI) is not armed.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.