2020 Freightliner Cascadia Technical Service Bulletins

661 technical service bulletins (TSBs) are on record for the 2020 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.

• 10176737Jun 25, 2020Engine cooling. Detroit Field Service campaign for DETROIT Export DD15 and DD13 Valve Lash Adjustment, Throttle Connector O-ring, and TC Air Line Spacer Installation.
• 10176736Jun 25, 2020Electrical system, Equipment. Service Bulletin for Cascadia ICC5 Units. On certain 2020 Cascadia vehicles, the flat panel display does not function as fully intended. The supporting electronic control unit (ECU) for the display will be replaced with an upgraded version.
• 10176279Jun 12, 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.
• 10176790Jun 10, 2020Engine cooling. Customer Service Announcement for Release of DiagnosticLink 8.12. On Wednesday, June 10, 2020, DiagnosticLink 8.12 will be made available for download from the ordering system. Current subscribers of DiagnosticLink 8.xx can upgrade to DiagnosticLink 8.12 at no cost. All DTNA service shops are required to maintain the latest version of software on each of their stations.
• 10176267Jun 10, 2020Steering. Field Service Campaign for Cascadia Steering Servos. On certain Cascadia vehicles, the current steering gear servo drive system does not allow vehicles to update to the latest software version. The steering gear servo drive will be replaced with a new drive, which includes the latest software, and the steering will be recalibrated
• 10176258Jun 10, 2020Engine cooling. Warranty Information Letter for a Warranty Service Replacement Engine Program Clarification. Detroit established the Warranty Service Replacement Engine Program to support an unrepairable catastrophic engine failure due to manufacturing defect. To improve understanding and utilization of the program, DTNA is clarifying eligibility and engine returns.
• 10176149Jun 3, 2020Electronic stability control. Customer Advisory Letter for ABS ECU Software Update. The Enhanced Stability Control (ESC) function within the ABS module that applies to the vehicles in your possession needs to be updated for the axle spread values. The ESC with the current values functions as it should, but should be updated to ensure proper calibration in the future.
• 10194446May 22, 2020Brakes. Customer Advisory Letter on New Cascadia ABS Fault Codes 520216/31 and 629/11
• 10175416May 22, 2020Electrical system, Equipment. Technical Service Letter for Detroit CPC501T GHG21 Only; Bootloader Update. On Detroit powertrain equipped Cascadias, built in 2020, it may be necessary to complete an additional step in the programming process when updating the CPC501T software.
• 10175415May 22, 2020Equipment. Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change. A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.
• 10175414May 22, 2020Fuel system, Engine cooling. Service Bulletin for Remote-Fill DEF Tank Fill Port Torque Value and Required Lubricant. Some New Cascadia vehicles with chassis fairings have remote-fill Diesel Exhaust Fluid (DEF) tanks which have new instructions to replace the remote fill hose and fitting. Proper torque value is critical, as the remote-fill fittings are plastic and can easily crack if overtightened. The gasket on the fill fitting is sensitive…
• 10175413May 22, 2020Electrical system. Customer Advisory Letter for Cab-to-Chassis Redundant Ground Strap Installation - FTL Service Bulletin 54-318. Our records indicate that you are the owner of certain vehicles, and DTNA has decided to share the following documentation with you. On New Cascadia vehicles Penske/Black Horse units built prior to May 23, 2019, cab wiring can be damaged with an incorrect ground location or loose ground connections.
• 10175411May 22, 2020Equipment, Steering. Customer Advisory Letter for Walmart for Draglink Inspection. Walmart to inspect the draglink for a loose castlenut at the steering arm connection point.
• 10193886May 19, 2020Other or unknown. Freightliner Action Bulletin FAB250 cascadia sales data bo-2020-07-02
• 10174987May 13, 2020Brakes. Customer Advisory Letter for ABS Modulator Valve Replacement. DTNA has decided to remove and replace the ABS modulator valves as part of an ongoing supplier quality study.
• 10193885May 1, 2020Other or unknown. Freightliner Action Bulletin FAB249 cascadia adr dealer bu-2020-07-02
• 10174398Apr 29, 2020Exterior lighting. Service Bulletin for Marker Light Gasket Leaks, New Cascadia. This bulletin replaces the version dated June 17,2019. A procedure has been added for inspection, repair, and replacement of damaged or spun rivet nuts.
• 10174376Apr 27, 2020Equipment. Warranty Information Letter for Warranty Training Online. DTNA is pleased to announce the release of new Warranty-related training videos. The videos provide Warranty content in short instructional videos that are available on demand through the AftermarkeTV Video Channel icon on the Aftermarket Resource Center (ARC) home page.
• 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.
• 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, 2020Visibility (wipers, defrost, mirrors), Body and structure. 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.
• 10173894Apr 17, 2020Back-over prevention (rear camera), Electrical system. Service Bulletin for Lengthening the Backup Light Harness. Though the backup light harness is long enough to connect to the backup light switch, it may be short enough that the wire seals in the connector can be stressed. Moisture entering through the seals can cause corrosion, resulting in a bad connection and/or failure of the switch. As a result, backup lights and, if equipped, the backup alarm, may not function…
• 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, 2020Engine cooling, Transmission and drivetrain. 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.
• 10173229Apr 3, 2020Air bags. Field Service Campaign for Freightliner Cascadia Airbag Retrofit. Certain vehicles were built without airbags due to a parts shortage, and some vehicles may need an updated crash sensor.
• 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, 2020Equipment, Engine cooling. 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.
• 10172591Mar 18, 2020Visibility (wipers, defrost, mirrors), Exterior lighting. Dealer Letter for New Cascadia vehicles with Detroit Assurance 5.0 regarding automatic headlamp and wiper retrofits. Reference service bulletin 54-324 or MCP submission, 20MC4726, CALFTL54-006.
• 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.
• 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.
• 10172025Mar 4, 2020Equipment. Open recall and Field service Campaigns report send out to Dealers, General Managers, Service managers and warranty managers
• 10172022Mar 3, 2020Electrical system, Equipment. 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, 2020Electrical system, Exterior lighting. Customer Maintenance Enhancements for the P4 Halogen Lamp replacement procedure.
• 10171975Mar 2, 2020Equipment, Electrical system. 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.

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