2018 Freightliner Cascadia Technical Service Bulletins

1,044 technical service bulletins (TSBs) are on record for the 2018 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.

• 10187928Feb 14, 2021Visibility (wipers, defrost, mirrors), Electrical system. Tech Talk continued discussion for P4 Next Gen Cascadia dome lights stay on while driving.
• 10188129Feb 12, 2021Engine cooling. Tech Talk discussion on 3226/20 Fault code always came back.
• 10188054Feb 10, 2021Electrical system, Engine cooling. Tech Talk discussion on GHG 17 SOFTWARE UPDATE FOLLOWED BY NO START.
• 10187881Feb 10, 2021Engine cooling. Important Campaign Information Letter announcing that a revision for Detroit Diesel Field Service Campaign D19M7. This letter is to inform you that Detroit Field Service Campaign D19M7 REV2, Pre-Series Cascadia Emission Label Replacement has been EXTENDED for an additional four months and re-activated on DTNA Connect. Please use the extended termination date for all work under D19M7 REV2 from this point forward.
• 10187879Feb 10, 2021Engine cooling. Revision for Field Service Campaign for pre-series Cascadia and New Cascadia Emission Label replacement. Additional sections have been updated.
• 10187600Feb 10, 2021Electrical system. Service Solution for P4 New Cascadia Unintended Dome Lamp Activation Due To Poor Connections at the sSAM.
• 10187598Feb 10, 2021Engine cooling, Electrical system. Service Solution for P3 - CEL On and Engine de-rate due to ATD Chassis Harness Circuit 532M5+ at DEF Heater Supply location is shorted.
• 10187440Feb 8, 2021Equipment. Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance. In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes. Revisions are in blue font.
• 10187847Feb 3, 2021Transmission and drivetrain. Tech Talk discussion on p4 dt12 not going into gear.
• 10187599Feb 2, 2021Seat belts. Service Solution for New Cascadia Seat Belt Warning Harness Routing
• 10187900Feb 1, 2021Engine cooling, Transmission and drivetrain. Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters. Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12 posters.
• 10186531Feb 1, 2021Engine cooling. Tech Talk discussion on Possible new regen strategy on GHG 17.
• 10186544Jan 29, 2021Lane departure, Forward collision avoidance. Tech Talk discussion on Detroit Assurance Radar Picking Up Overhead Signs.
• 10185961Jan 26, 2021Electrical system, Engine cooling. Superseded Service Solution for New Cascadia P4 Coolant Level Wiring Damage. Fault codes can be generated if wiring to the coolant level sensor becomes damaged. This Service Solution has been superseded to service bulletin SB 54-337. Please see the service bulletin for the most current information.
• 10185931Jan 25, 2021Engine cooling, Equipment. Technical Service Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.
• 10185903Jan 25, 2021Engine cooling, Equipment. Technical Service Letter for GHG17 1-Box Inlet and Outlet Exhaust Clamps. There is a short supply of exhaust clamps, part number DDE A6809950502, used as inlet and outlet exhaust clamps on GHG17 heavy duty engines (DD13, DD15 and DD16) with a 1-Box aftertreatment configuration. Exhaust clamp part number TCX T130158342AC2 may be used as a substitute for DDE A6809950502, but be aware of the different torque specs…
• 10185897Jan 25, 2021Engine cooling, Equipment. Warranty Information Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.
• 10185895Jan 25, 2021Equipment, Electrical system. Freightliner Service Bulletin for Rain/Light Sensor Removal. On New Cascadia vehicles, a delay in the timing of communication (hand shake) between the rain/light sensor (RLS) and sSAM generates fault code "33/521940/12 - rain/light sensor - general DTC timeout", which causes the sensor to stop working.
• 10185894Jan 22, 2021Equipment. Important Campaign Information Letter for SF576 - Campaign Suspended. Due to parts availability it has been determined that this campaign will be suspended. A second Important Campaign Information letter will be posted when the campaign has been reactivated.
• 10185690Jan 20, 2021Body and structure. Freightliner Service Bulletin for Replacement Cab Doors with Pre-Drilled Holes. Replacement doors for New Cascadia vehicles are now pre-drilled with two holes for the installation of turning vanes. If turning vanes are not installed, the pre-drilled holes need to be plugged with ratchet fasteners.
• 10185688Jan 20, 2021Engine cooling, Electrical system. Freightliner Service Bulletin for Coolant Level Sensor Wiring Repair. On New Cascadia vehicles, depending on the tension applied to the harness located at the coolant level sensor and its mounting locations, wiring damage can occur, resulting in one or more of the below listed fault codes.
• 10185896Jan 17, 2021Equipment, Engine cooling. Warranty Information Letter for Detroit New Service Replacement Engine SRT Update. While validating Standard Repair Times (SRTs) for Detroit's new Gen 5 engine series, DTNA discovered an error in a pre-Gen 5 SRT for the New Service Replacement Engine Program. As a result, DTNA re-studied the SRT and concluded that time for removing/re-installing multiple components (e.g., exhaust manifold/turbo, engine sensor…
• 10186607Jan 14, 2021Engine cooling. TechTalk discussion on Fault Code 520342-17.
• 10184869Dec 29, 2020Visibility (wipers, defrost, mirrors), Equipment. Freightliner Service Bulletin for Front HVAC Evaporator Freezing and Espar Heater Cool Down Algorithm. New Cascadia vehicles with sleeper cabs may become extremely cold when in A/C mode, which can lead to reduced airflow as a result of internal ice buildup at the evaporator. Durability of the Espar D5 heater system when paired with the battery parked HVAC system (BPHS) can be improved by applying "cool down"…
• 10184900Dec 23, 2020Engine cooling. Tech Talk continued discussion on Fault Code 520342-17.
• 10184785Dec 23, 2020Transmission and drivetrain. Revised Freightliner Service Bulletin for Axle Flange Gasket Replaced with O-Ring. Revision removed steps instructing removal and installation of wheels. Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable.
• 10184927Dec 22, 2020Engine cooling, Equipment. Tech Talk discussion on P3 Cascadia not able to install new CPC.
• 10184895Dec 22, 2020Brakes. Tech Talk discussion on New Cascadia "low air pressure" warning light.
• 10184894Dec 21, 2020Exterior lighting. Tech talk continuing discussion on P4 intermittent headlamps.
• 10184899Dec 17, 2020Transmission and drivetrain. Tech Talk discussion on New Cascadia DT12 coming out of gear.
• 10184872Dec 14, 2020Electrical system. Service Solution for flickering overhead reading light during slight movement of the steering wheel for New Cascadia with DR 40SI alternators, possibly other alternators as well. The flickering overhead light is considered a nuisance, and can be simply eliminated by either adding an accessory to one of the power receptacles, or running an additional ground in one of the sleeper bunk lamps to suppress the ripples on…
• 10184035Dec 11, 2020Equipment. Service Bulletin for Pana-Pacific DEA505 Radio Reprogramming. On right-hand drive New Cascadia vehicles built before September 28, 2020, incompatible radio software can cause the Pana-Pacific DEA505 radios (A22-76228-000) to send the Bluetooth audio to the left-hand door speaker.
• 10184029Dec 8, 2020Steering, Transmission and drivetrain. Revised Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. Revisions are in blue. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications.
• 10183988Dec 7, 2020Equipment, Transmission and drivetrain, Steering. Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications.
• 10184891Dec 6, 2020Wheels, Brakes. Tech Talk discussion on New Cascadia P4 abs wheel speed sensor locations.
• 10183733Dec 6, 2020Engine cooling. Technical Service Letter for SPN 3711 FMI 31 on GHG17 DD15 Trucks.
• 10184907Dec 2, 2020Engine cooling. Tech Talk discussion on DDEC reports.
• 10184910Dec 1, 2020Electrical system, Equipment. Tech Talk discussion on p3 Cascadia overcharging.
• 10183954Nov 30, 2020Equipment, Engine cooling, Fuel system. Special Publication letter for Two-Filter Fuel System KM59 GEN1 DD15 DD16 Severe Duty High Pressure Fuel Rail Feed Lines Service Kit.
• 10183735Nov 30, 2020Transmission and drivetrain. Revised Service Bulletin for DT12 PTO Upfit. This bulletin replaces the version dated 09/13/2019. DDCSN and Power Service Literature references have been removed.
• 10183403Nov 30, 2020Brakes, Equipment, Engine cooling. Tech Talk discussion on service brakes lock up when using engine brakes.
• 10182888Nov 20, 2020Electrical system. Revised Field Service Campaign for Cascadia CTP Initialization. Certain vehicles equipped with DTNA's proprietary Common Telematics Platform (CTP) are not communicating and, therefore, are unable to benefit from over-the-air software updates. The CTP will be initialized. REVISION: The work instructions have been updated to add a step to take a screenshot of the DiagnosticLink window to keep on file.
• 10182887Nov 20, 2020Electrical system. Revised Field Service Campaign sent out to customers to fix Common Telematics Platform (cTP), and Truck Data Center (TDC) communication issues. Certain vehicles built with DTNA's proprietary Common Telematics Platform (CTP), and Truck Data Center (TDC) are not communicating or have outdated software that cannot be updated and, therefore, are unable to benefit from over-the-air software updates.
• 10182886Nov 20, 2020Fuel system. Detroit Connect Customer Communication for vehicle trips not populating in the Vehicle History Trips page. This may affect Fleet Fuel Analysis and Fuel Economy Calculations.
• 10183305Nov 7, 2020Visibility (wipers, defrost, mirrors). Tech Discussion on New Cascadia windows switch opperating horn, wipers dont opperate properly.
• 10183443Nov 5, 2020Transmission and drivetrain, Equipment. Tech Talk discussion on DT12 trans/clutch relearn procedure fails.
• 10183322Nov 5, 2020Electrical system. Customer Advisory Letter for Dome Lamps Do Not Illuminate When the Right-Hand Door is Opened.
• 10181759Oct 27, 2020Electrical system, Equipment. Updated Freightliner Service Bulletin for Powernet Troubleshooting Guide - Batteries, Path, Alternator, and Starter. This bulletin replaces the version dated 5/31/2017. Information is added about the BCT-460DTNA PowerNet Assessment Tool. When troubleshooting Powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter® is the only Daimler-approved tool for troubleshooting…
• 10181368Oct 20, 2020Transmission and drivetrain, Electrical system. Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update. On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
• 10182011Oct 16, 2020Electrical system, Equipment. Tech Talk discussion on ESPAR units not functioning.

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