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Service bulletins for the 2026 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.

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

By type

By component

Bulletins, newest first
CXA_01_26_Fifth Gen Cas2026-02-03. Other. UNKNOWN OR OTHER. CX Advocate for Fifth Generation Cascadia
TSB-54-379-FTL2026-02-03. Service bulletin. SERVICE BRAKES. Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
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-00-045-FTL2026-02-03. Service bulletin. UNKNOWN OR OTHER. Technical Service Bulletin for 5th Generation Cascadia Feature Brief
CAL FTL-20-0082026-02-03. Other. ENGINE. Customer Advisory Letter for Variable Speed Water Pump Remains Fully Engaged
CAL FTL-32-0122026-02-03. Other. SUSPENSION. Customer Advisory Letter for HSV Link Smart Valve Firmare Update
WI26-0022026-02-03. Other. UNKNOWN OR OTHER. Warranty Information Letter for Sundown of Quality Check for Fifth Generation Cascadia Vehicles
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_NFD Axle2026-01-08. Other. POWER TRAIN. Fleet Communications for Detroit NFD Axle - Factory Fluid Change
FleetCom_HVAC Eco Mode2026-01-08. Other. VISIBILITY/WIPER. Fleet Communications for HVAC Eco Mode - SoP Disabled Jan 2026
FleetCom_Heater Core2026-01-08. Other. ENGINE. Fleet Communications for Heater Core Plugging
FleetCom_ECU Faults2026-01-08. Other. ELECTRICAL SYSTEM. Fleet Communications for Corrosion Protecton/Glyptal Application
FleetCom_CTP3 Global2026-01-08. Other. ELECTRICAL SYSTEM. Fleet Communications for CTP3 Global Streaming (DaaS) & CPC5 Password Protection
FleetCom_TCM Clutch2026-01-07. Other. POWER TRAIN. Fleet Communications for TCM Fault 520970/7 – Clutch Unable to Open Fully
TSB54-378-FTL2026-01-07. Service bulletin. ELECTRICAL SYSTEM. Technical Service Bulletin for Maintenance Mode Horn Activation Correction
TSB54-377-FTL2026-01-07. Service bulletin. ENGINE. Technical Service Bulletin Low Coolant Sensor
FleetCom_AC Compressor2025-12-06. Other. VISIBILITY/WIPER. Fleet Communications for A/C Compressor Assembly when replaced
FleetCom_Clutch2025-12-06. Other. POWER TRAIN. Fleet Communications for New AMTcc - DTC 520970/7: Clutch Unable to Open Sufficiently
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_Bosch Steer Gear2025-12-05. Other. STEERING. Fleet communications for Bosch Steering Gear Replacements
FAB3332025-12-02. Other. SERVICE BRAKES. Features and Benefits for Intelligent Air System for Cascadia Fifth Gen
CXA 11_25_ECU Faults2025-12-02. Other. ELECTRICAL SYSTEM. CX Advocate for Intermittent Connections and ECU Fault Codes

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