2021 Freightliner Cascadia Technical Service Bulletins

509 technical service bulletins (TSBs) are on record for the 2021 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.

• 10174375Apr 27, 2020Transmission and drivetrain. DASH announcement for Hendrickson Optimaax 6x2 Lift Axle. Freightliner recently announced the availability of the Hendrickson Optimaax 6x2 lift axle. Due to quality concerns discovered late with pre-series builds, Freightliner has implemented a block in SpecPro as of April 9, 2020, to prevent ordering or quoting of this component until further notice.
• 10174070Apr 24, 2020Equipment. Customer Service Announcement for Gen 5 DD15 Customer Demo Units. To grow on continued success in the market place, we continue to innovate, test and field new products that deliver on Total Cost of Ownership. The test process allows us to field a limited number of Gen 5 DD15 Customer Demo Units (CDU) to further ensure we meet the stringent demands of our customers. There will be approximately twenty CDU vehicles…
• 10174061Apr 23, 2020Equipment. Warranty Policy Letter for Chassis Progressive Damage Policy Change. Effective for repair orders opened on or after April 27, 2020, if an Authorized Service Location installed a part which later has a warrantable failure, progressive damage and labor may be covered under the Aftermarket Parts Limited Parts Warranty (Parts Warranty).
• 10174060Apr 23, 2020Equipment. Warranty Policy Letter for Handling for Authorized Service Location Part Transfers. To promote 24-hour throughput and maximum efficiency, DTNA is adjusting multiple handling policies: Launching a new handling allowance for parts ordered from another Authorized Service Location because the facing Part Distribution Center (PDC) is out of stock Retiring Detroit's Customer First Program
• 10174052Apr 22, 2020Equipment. Warranty Policy Letter for Handling Change: Over the Counter Aftermarket Parts Replacement Program. DTNA is pleased to announce that handling will increase to 33% for Misc. Replacement Part type claims filed under the Over the Counter (OTC) Aftermarket Parts Replacement Program.
• 10173907Apr 21, 2020Equipment, Engine cooling. Warranty Information Letter for Warranty Long Block Program Change. The Detroit Reman Long Block Program has expanded. The expansion reduces complexity in ordering reman engines and promotes stocking reman engines to meet uptime commitments.
• 10173905Apr 21, 2020Body and structure. Service Bulletin for Draining Water Trapped in the Upper A-Pillar. A water leak in the seams between the cab roof and cab side wall or back wall can result in water becoming trapped in the upper A-pillar area in some Cascadia and New Cascadia vehicles. This water may migrate inside the cab and eventually spill through the marker light fastener clearance holes and drip on the dash.
• 10173898Apr 17, 2020Body and structure, Visibility (wipers, defrost, mirrors). Service Bulletin for Installing Rain Gutters for Upper Door Seal Leaks. New Cascadia day cab vehicles with roof fairings may experience minor water leaks through the upper door seals. This issue can be minimized by regularly wiping down the door seals to keep them free of road grime. A rain gutter seal can also be installed above each door using a Cascadia tertiary seal (part number 18-63286-002).
• 10173897Apr 17, 2020Equipment. Service Bulletin for Wear Pad Installation. The area of the floor mat near the throttle pedal is more prone to wear. To extend the life of a floor mat, a wear pad can be installed on it near the throttle and brake pedal area.
• 10173896Apr 17, 2020Visibility (wipers, defrost, mirrors). Service Bulletin for Replacing Windshield Gasket. Different types of cab leaks can result in water dripping from the top of the windshield, onto the dash. Replacing a windshield gasket unnecessarily may create new leak issues. Do not replace a windshield gasket unless it has been confirmed to leak, using the cab pressure test.
• 10173893Apr 17, 2020Lane departure. Service Bulletin for New Cascadia ICUC Active Lane Assist (ALA) Dash Menu Discrepancy. New Cascadia vehicles equipped with Detroit Assurance 5.0 that are not equipped with Active Lane Assist (ALA) may incorrectly display ALA availability in the ICUC quick access menu. The following procedure will provide a parameter update to correct the ICUC menu display.
• 10173892Apr 17, 2020Equipment. 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. The procedure to check the current software version of the radio is updated.
• 10173647Apr 8, 2020Transmission and drivetrain, Engine cooling. Service Solution for P4 New Cascadia with Manual Transmissions Does Not Use Bottom Of Clutch Switch For Starting. On the prior P3 Legacy Cascadia vehicles with manual transmission, the Bottom of Clutch (BOC) switch could be uses as an interlock for the engine crank circuit. If programmed in the SAM Cab, the engine crank circuit would require the clutch to be fully depressed in order for the engine to crank.
• 10173646Apr 8, 2020Electrical system, Exterior lighting. Service Solution for P4 New Cascadia Road Lamp Strain Relief and Water Protection For Electrical Connection. The connector that attaches to the road lamp is exposed to water spray from the vehicles front tires. Even though the connector is sealed, water spray, in conjunction with wiring that may be pulled sideways, can attribute to water intrusion into the connector.
• 10173645Apr 8, 2020Wheels, Tires. Customer Advisory Letter for GWR Label Correction. Freightliner 108SD/114SD, Coronado, New Cascadia, and Business Class M2 vehicles and Western Star 4700 and 4900 vehicles equipped with a certain tire rating have the wrong Component GWR label. DTNA is requesting the current Component GWR label be replaced with the correct label.
• 10172976Mar 30, 2020Engine cooling. Service Solution for Updated Common Telematics Platform (CTP) Installation and Activation Procedure. Some new CTPs being installed in the field have failed to activate and do not communicate with Detroit Connect back end. The activation of the CTP requires that the VIN and CTP serial number pair is transmitted from DiagnosticLink to the Detroit Connect registration server.
• 10172974Mar 30, 2020Suspension. Freightliner Service Bulletin for Front Axle Spacer Replacement. This service bulletin replaces the version dated 05/01/2016. This bulletin is updated to include the parts list. Some vehicles may exhibit a lean (right or left) due to weight difference on the front suspension. While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers. To correct this condition, replace…
• 10172750Mar 23, 2020Equipment. Service Solution for New Cascadia Bluetooth Microphone Relocation. Some fleet drivers are complaining about a lack of reception of the Bluetooth microphone due to it's proximity in the center of the overhead console. The Bluetooth microphone can be relocated into the driver's side overhead panel, either left hand or right hand drive applications.
• 10172649Mar 20, 2020Engine cooling, Equipment. Customer Service Announcement saying that Service Pack (SP) 3 for DiagnosticLink® 8.11 Standard and Professional will be available for download from the Detroit Diesel server.
• 10172592Mar 18, 2020Electrical system. Service Solution for fault code VRDU 524127/9 - lost communication with the MPC. VRDU fault code 524127/9 is often caused by lack of ignition supply to the MPC, which causes it to stop communicating.
• 10172579Mar 17, 2020Equipment. Open recall and Field service Campaigns report send out to Dealers, General Managers, Service managers and warranty managers.
• 10172574Mar 17, 2020Equipment, Suspension. Freightliner Service Bulletin for vibration troubleshooting - finding the cause. This version replaces the version dated 5/1/14 and adds New Cascadia.
• 10172547Mar 17, 2020Body and structure, Equipment. Warranty Policy Letter explaining the Warranty Department is aligning with the frame rail repair policy, published in DTNA Workshop Manuals, which states that there are very few cases in which welding a heat-treated frame rail is allowed. Therefore, before welding anything on a frame rail, contact the applicable regional service representative for approval.
• 10172280Mar 6, 2020Steering, Suspension. Service Bulletin for APS3 Steering Gear Calibration. Vehicles equipped with an APS3 steering gear require calibration when an axle alignment is performed. Calibration is also needed when servicing any steering or suspension components, frame extension bracket or wheels or tires.
• 10172148Mar 5, 2020Engine cooling. Technical Service Letter for DD Platform Heavy Duty, Metal in the Oil and Oil Filter. Some engine component failures can cause metallic debris to circulate throughout the engine lubrication system. Although the oil filter will capture most of this debris, some debris may enter the clean side of the lubrication system during oil filter bypass. Detroit has created a lubrication system cleaning and flushing procedure…
• 10172136Mar 5, 2020Electrical system. Customer Service Announcement saying that Service Pack (SP) 2 for Diagnostic Link 8.11 Standard and Professional will be available for download from the Detroit Diesel server.
• 10172022Mar 3, 2020Equipment, Electrical system. 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.
• 10171977Mar 3, 2020Exterior lighting, Electrical system. Customer Maintenance Enhancements for the P4 Halogen Lamp replacement procedure.
• 10171975Mar 2, 2020Electrical system, Equipment. Service Bulletin for Electrical Wall Chart and VPDM Cover on New Cascadia with Detroit Assurance 5.0 and Multi-Purpose Camera 2.
• 10171911Mar 2, 2020Electrical system. Customer Advisory Letter that an inspection to determine if the high current breaker has been bypassed.
• 10171364Feb 14, 2020Exterior lighting, Visibility (wipers, defrost, mirrors). 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.
• 10194444May 7, 2019Electrical system, Brakes. Customer Advisory Letter on Enabling Horn Alarm with the Door Open and the Park Brake Set
• 10236419Mar 5, 2019Electrical system. ABS Light illuminating in the ICU.
• 10236418Feb 1, 2019Electrical system. ICUC Bulb check function.
• 10195478Jun 28, 2018Electrical system. SS 1033638 - Power Window Express Down Module Discontinued
• 10192964Jun 22, 2018Electrical system. Evolution APU No Regen.
• 10195482Jun 21, 2018Suspension. Service Solution SS 1033523 Airliner Suspension Dump and Raise Functionality and Troubleshooting
• 10195512May 10, 2018Electrical system. SS1033482: Trailer Stop lamp activation w/ hand valve (parameter configuration) - P4 New Cascadia
• 10195515May 7, 2018Electrical system. SS1033452 Setting the time in the ICUC (New Cascadia)
• 10194362Dec 18, 2017Body and structure. On Cascadia vehicles built from November 25, 2013, the drain holes at the bottom of the cab doors were enlarged to improve drainage during the e-coat process in the manufacturing plant. The larger holes allow more cold air to flow through the doors, most noticeably in extreme cold conditions.
• 10193610Nov 17, 2017Transmission and drivetrain, Equipment. New DT12 Transmission for Original Cascadia
• 10195701Sep 25, 2017Other or unknown. Cascadia - Engine Will Not Crank (No Starter Output from SAM Cab)
• 10195550Aug 11, 2017Electrical system. Service Solution SS 1033198 P4 New Cascadia Refrigerator Power Supp...
• 10195913Jul 14, 2017Electrical system. Cascadia Fault codes 6.0
• 10195659Jul 11, 2017Other or unknown. SS 1032974 High Oil Pressure on 2017 DTNA Vehicles Instrument Cluster Display
• 10195924Jul 10, 2017Other or unknown. SAM Cab & SAM Chassis Wall Charts
• 10193597Jun 7, 2017Transmission and drivetrain, Equipment. Air-to-Oil Coolers for DT12 in New Cascadia
• 10193595May 15, 2017Equipment, Transmission and drivetrain. New Accuride Aluminum Wheels
• 10195575May 12, 2017Fuel system. Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
• 10195593Mar 30, 2017Other or unknown. Service Solution SS 1033047 M2 Battery Drain Problem – Mismatched I...

← All problems reported for the 2021 Freightliner Cascadia