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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.

Warranty extensions
WI24-0192024-12-04. ENGINE. Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates

A warranty extension may pay for a repair after the basic warranty has ended. Read the document for which vehicles and which repair it covers.

By type

By component

Bulletins, newest first
TEM-11-000012026-08-03. Other. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: WARNINGS. Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
CXA 06_26_Utility Lamp2026-07-06. Other. EXTERIOR LIGHTING. CX Advocate for Utility Lamp water intrusion
TSB-26-057-FTL2026-06-01. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
CXA 04_26_Side Guard2026-05-02. Other. LANE DEPARTURE: BLIND SPOT DETECTION. CX Advocate for P4 Side Guard Assist On/Off Menus and Trailer Functionality (TSB-54-381-FTL)
MyCom_02062026-12026-03-04. Other. FUEL/PROPULSION SYSTEM. My Communications for update on UFU R61709 Fuel Filters
TSB-26-055-FTL2026-02-03. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for DT12 Excessive Wear
TSB-26-055-FTL2026-02-03. Service bulletin. POWER TRAIN. Technical Service Bulletin for DT12 Excessive Wear
TSB-26-052-FTL2026-02-03. Service bulletin. POWER TRAIN. Technical Service Bulletin for DT12 PTO Upfit
TSB-00-046-FTL2026-02-03. Service bulletin. UNKNOWN OR OTHER. Technical Service Bulletin for Cascadia Generations
FleetCom_Pwr Steer Res2026-01-08. Other. STEERING. Fleet Communications for Power Steering Resevoir - NTF Replacements
FleetCom_Passive Lube2026-01-08. Other. POWER TRAIN. Fleet Communications for Detroit Axle NFD ALM to Passive Lube Management
FleetCom_Oil Plug Loc2026-01-08. Other. POWER TRAIN. Fleet Communications for NFD Lower Oil Plug Location - SP Axles
FleetCom_NFD Axle2026-01-08. Other. POWER TRAIN. Fleet Communications for Detroit NFD Axle - Factory Fluid Change
FleetCom_Heater Core2026-01-08. Other. ENGINE. Fleet Communications for Heater Core Plugging
FleetCom_SS 3174-FTL2025-12-06. Other. ELECTRICAL SYSTEM. Fleet Communication for SS 3174-FTL
FleetCom_AMP Draw2025-12-06. Other. ELECTRICAL SYSTEM. Fleet Communications for Key off amp draw
FleetCom_SS 3163-FTL2025-12-06. Other. ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
FleetCom_Low Coolant2025-12-05. Other. ENGINE. Fleet Communications for Low Coolant Sensor
FleetCom_Bosch Steer Gear2025-12-05. Other. STEERING. Fleet communications for Bosch Steering Gear Replacements
CXA 10_25_Air Dryer Purge2025-11-06. Other. SERVICE BRAKES. CX Advocate for Experiencing Excessive Purging from Air Dryer
MYCOM_10302025-12025-11-05. Other. FUEL/PROPULSION SYSTEM. My Communications for Update to DTNA parts on UFU R61709
FAB3442025-11-05. Other. FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING. Features and Benefits for SafetyDirect 5.1
SS3076-FTL2025-11-05. Other. VISIBILITY/WIPER. Service Solution for P4 Main Mirror Arm Covers Loose - Falling Off
CXA_10_25_Low Coolant2025-11-05. Other. ENGINE. CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CXA_10_25_Conmet Oil Pan2025-11-05. Other. ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Issues

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