2023 Freightliner Cascadia Technical Service Bulletins

266 technical service bulletins (TSBs) are on record for the 2023 Freightliner Cascadia. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11038001Sep 10, 2026Visibility (wipers, defrost, mirrors). Technical Service Bulletin for HVAC Stops Cooling
• 11037996Sep 4, 2026Transmission and drivetrain. Detroit Transmissions Manual Update for Symptom Diagnostics — DT12 C/D Box Range Shift to Neutral with Reversing Events (Aborts)
• 11036680Sep 1, 2026Body and structure. Draining Water Trapped in the Upper A-Pillar
• 11036662Aug 6, 2026Brakes. Revised Warranty Information letter for missing chamber caging bolts
• 11035536Jul 21, 2026Forward collision avoidance. Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
• 11035527Jul 8, 2026Transmission and drivetrain. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Updated frequently asked questions.
• 11034535Jun 30, 2026Brakes. Warranty Information letter for missing chamber caging bolts
• 11034519Jun 18, 2026Exterior lighting. CX Advocate for Utility Lamp water intrusion
• 11034514Jun 18, 2026Transmission and drivetrain. CX Advocate for Eliminating Retaining H-Plate; Revised to Native Voss Quick­Connect
• 11033097May 20, 2026Other or unknown. Warranty Information letter for Reman Parts Usage Policy Reminder
• 11033103May 8, 2026Transmission and drivetrain. Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
• 11031986Apr 23, 2026Electrical system. Service Solution for Progressive Low Voltage Disconnect Parameter Update
• 11031992Apr 17, 2026Transmission and drivetrain. Revised Technical Service Bulletin for DT12 Range Detent Diagnostic
• 11031981Apr 16, 2026Lane departure. CX Advocate for P4 Side Guard Assist On/Off Menus and Trailer Functionality (TSB-54-381-FTL)
• 11031973Apr 15, 2026Transmission and drivetrain. Important Campaign Information for SF706 - Revised, Reactivated
• 11031972Apr 15, 2026Transmission and drivetrain. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
• 11031971Apr 15, 2026Transmission and drivetrain. Revised Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
• 11031957Apr 10, 2026Forward collision avoidance. Parts Bulletin for Discontinued Camera Cable and Replacement Options
• 11030507Mar 19, 2026Engine. CX Advocate for discolored coolant surge tanks (24CSA-20)
• 11030500Mar 19, 2026Brakes. CX Advocate for 1810/02 ABS longitudinal acceleration fault (TSB-54-104-WST,TSB-54-379-FTL)
• 11030508Mar 17, 2026Lane departure. Technical Service Bulletin forSide Guard trailer detection
• 11030686Mar 15, 2026Visibility (wipers, defrost, mirrors). Fleet Communications for Hood Tilt CPC update and OI Comfort Mode parameters
• 11030515Mar 6, 2026Other or unknown. Fleet Communications for top 10 warranty components and action
• 11030493Mar 2, 2026Transmission and drivetrain. Important Campaign Information letter for SF706 - campaign suspended
• 11029522Feb 25, 2026Transmission and drivetrain. Fleet Communications for SF706 - Cascadia axle conversion
• 11029521Feb 25, 2026Fuel system. Fleet Communications for parts bulletin on Fluorosilicone Fuel Tank Cap Seals
• 11029519Feb 25, 2026Brakes. Fleet Communications for TSB-54-379-FTL & TSB-54-104-WST ESC warning lamp and ECU replacement
• 11029526Feb 17, 2026Fuel system. Parts Bulletin for Fluorosilicone Fuel Tank Cap Seals
• 11029516Feb 16, 2026Transmission and drivetrain. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
• 11029515Feb 16, 2026Transmission and drivetrain. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
• 11029509Feb 16, 2026Transmission and drivetrain. Field Service campaign for Cascadia Axle Conversion: Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
• 11029513Feb 10, 2026Brakes. My Communications for Alliance EX Value Brake Drum
• 11029512Feb 6, 2026Fuel system. My Communications for update on UFU R61709 Fuel Filters
• 11029511Feb 4, 2026Other or unknown. My Communications for fifth wheel leg height changes
• 11029633Feb 3, 2026Suspension. Fleet Communications for composite front suspension bushing
• 11028071Jan 28, 2026Brakes. Revised Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
• 11028073Jan 26, 2026Transmission and drivetrain. Revised Technical Service Bulletin for DT12 Excessive Wear
• 11028064Jan 22, 2026Brakes. Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
• 11028063Jan 22, 2026Transmission and drivetrain. Technical Service Bulletin for DT12 Excessive Wear
• 11030279Jan 15, 2026Transmission and drivetrain. Technical Service Bulletin for Transmission shift stalk
• 11028069Jan 15, 2026Transmission and drivetrain. CX Advocate for Aftermarket Transmission Support
• 11028061Jan 15, 2026Other or unknown. Technical Service Bulletin for Cascadia Generations
• 11028287Jan 12, 2026Electrical system. Fleet Communications for Intermittent Connections and ECU Fault Codes
• 11028062Jan 6, 2026Transmission and drivetrain. Technical Service Bulletin for DT12 PTO Upfit
• 11027503Dec 11, 2025Steering. Fleet Communications for Power Steering Resevoir - NTF Replacements
• 11027502Dec 11, 2025Transmission and drivetrain. Fleet Communications for Detroit Axle NFD ALM to Passive Lube Management
• 11027500Dec 11, 2025Transmission and drivetrain. Fleet Communications for NFD Lower Oil Plug Location - SP Axles
• 11027497Dec 11, 2025Transmission and drivetrain. Fleet Communications for Detroit NFD Axle - Factory Fluid Change
• 11027496Dec 11, 2025Other or unknown. Fleet Communications for Mudflap Hanger Bracket Fixturing
• 11027493Dec 11, 2025Engine. Fleet Communications for Heater Core Plugging

← All problems reported for the 2023 Freightliner Cascadia