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.

• 11027492Dec 11, 2025Electrical system. Fleet Communications for Corrosion Protecton/Glyptal Application
• 11027491Dec 11, 2025Suspension. Fleet Communications for Cascadia Front Suspension Spring Pin Bushings
• 11027489Dec 11, 2025Transmission and drivetrain. Fleet Communications for CY2023 C/D DT12 Range Detent Pin
• 11027487Dec 11, 2025Brakes. Fleet Communications for ABS Wheel Speed Sensor Faults
• 11027222Dec 11, 2025Transmission and drivetrain. Fleet Communications for TCM Fault 520970/7 – Clutch Unable to Open Fully
• 11027199Dec 1, 2025Engine. Technical Service Bulletin Low Coolant Sensor
• 11025884Nov 25, 2025Forward collision avoidance. Revised Technical Service Bulletin for Wabco OnGuard Display Discrepancy
• 11026469Nov 20, 2025Electrical system. Fleet Communication for SS 3174-FTL
• 11026457Nov 20, 2025Transmission and drivetrain. Fleet Communications for New AMTcc - DTC 520970/7: Clutch Unable to Open Sufficiently
• 11026454Nov 20, 2025Electrical system. Fleet Communications for Key off amp draw
• 11026453Nov 20, 2025Engine. Fleet Communications for Power Steering Reservoir Fill Cap Venting
• 11025880Nov 20, 2025Electrical system. CX Advocate for Intermittent Connections and ECU Fault Codes
• 11025875Nov 20, 2025Transmission and drivetrain. CX Advocate for New AMTcc - DTC 520970/7: Clutch Unable to Open Sufficiently
• 11026421Nov 19, 2025Engine. Fleet Communications for Low Coolant Sensor
• 11026420Nov 19, 2025Steering. Fleet communications for Bosch Steering Gear Replacements
• 11024979Oct 30, 2025Fuel system. My Communications for Update to DTNA parts on UFU R61709
• 11024978Oct 29, 2025Lane departure, Forward collision avoidance. Features and Benefits for SafetyDirect 5.1
• 11024972Oct 23, 2025Visibility (wipers, defrost, mirrors). Service Solution for P4 Main Mirror Arm Covers Loose - Falling Off
• 11025096Oct 16, 2025Suspension. CX Advocate for 18k Front Suspension Shock Absorbers
• 11025095Oct 16, 2025Engine. CX Advocate for Plastic Opaque Surge Tank Staining
• 11025094Oct 16, 2025Brakes. CX Advocate for Experiencing Excessive Purging from Air Dryer
• 11024969Oct 16, 2025Suspension. CX Advocate for TufTrac M12 Bolts (TSB-32-057-FTL)
• 11024966Oct 16, 2025Electrical system, Transmission and drivetrain. CX Advocate for technical questions/issues raised
• 11024962Oct 16, 2025Engine. CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
• 11024958Oct 16, 2025Engine. CX Advocate for ConMet Oil Pan Insert Additional Issues
• 11023690Sep 30, 2025Suspension. Technical Service Bulletin for TufTrac M12 Bolts
• 11023686Sep 24, 2025Suspension. Field Service Campaign for SF721 18k Front Suspension Shock Absorbers
• 11023685Sep 24, 2025Suspension. Field Service Campaign for SF721 18k Front Suspension Shock Absorbers
• 11023684Sep 24, 2025Suspension. Field Service Campaign for SF721 18k Front Suspension Shock Absorbers
• 11023683Sep 18, 2025Engine, Transmission and drivetrain. CX Advocate for technical questions/issues raised
• 11023659Sep 15, 2025Steering. Warranty Information letter for Power Steering Tank Venting Diagnostic Procedures Revision
• 11023665Sep 12, 2025Brakes. My Communications for Parts Alert ABS Harness
• 11023661Sep 9, 2025Other or unknown. My communications for DTNA Announces Extended Coverage Policy Updates
• 11023657Sep 5, 2025Fuel system. Revised Parts Bulletin for Cascadia 23-inch Diameter Fuel Tanks
• 11030623Sep 2, 2025Transmission and drivetrain. Technical Service Bulletin for DT12 Range Detent Diagnostic
• 11023660Sep 2, 2025Fuel system. My Communications for UFI 0-Ring Announcement
• 11022341Aug 21, 2025Transmission and drivetrain, Other or unknown, Engine. CX Advocate for technical questions/issues raised
• 11022340Aug 21, 2025Transmission and drivetrain. CX Advocate for DT12 - TCM CAN communication issues with CPC
• 11022337Aug 21, 2025Visibility (wipers, defrost, mirrors). CX Advocate for HVAC stops cooling (TSB-83-163-FTL)
• 11022333Aug 21, 2025Fuel system. My Communications for UPDATE TO DTNA PARTS QUALITY ALERT STOCK HOLD on UFU R61709
• 11022332Aug 18, 2025Fuel system. My Communications for Parts Hold on UFU Filter
• 11022317Aug 15, 2025Engine. Revised Customer Service Annoucement for No Trouble Found Heavy Duty Engine Product (HDEP) Oil Separator Leaks
• 11021242Jul 28, 2025Wheels. Revised Technical Service Bulletin for Hub Oil Level in Final Drive (NFD) Top Performance Axles on Decked Vehicles
• 11021225Jul 3, 2025Visibility (wipers, defrost, mirrors). Technical Service Bulletin for HVAC Stops Cooling
• 11020273Jun 11, 2025Steering. Parts Bulletin for Tie Rod Assembly Part Breakdown
• 11019124May 20, 2025Electrical system. Service Solution for Progressive Low Voltage Disconnect Parameter Update
• 11017555Apr 30, 2025Transmission and drivetrain. Service Solution for DT12 Oil Plug Ports
• 11017537Apr 23, 2025Electrical system. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
• 11017549Apr 18, 2025Other or unknown. Features and Benefits for Detroit Connect UpfrontService Extension
• 11017548Apr 18, 2025Other or unknown. Features and Benefits for Detroit Connect Base Service Renewal

← All problems reported for the 2023 Freightliner Cascadia