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.

• 10201999Sep 13, 2021Equipment. DetroitConnect follow-up customer communication for certain vehicles unable to complete over the air updates including parameters and DDEC over the air.
• 10201989Sep 13, 2021Equipment. My Communication for Detroit Connect Over the Air Issue Update. This is an update for the previously communicated Over the Air functionality issue on CTP1s. We are currently testing a solution for the issue that is affecting these CTP1 telematics devices. While testing is not complete initial results are promising. The solution will require a soft ware update which is currently planned for October/November.
• 10200615Aug 19, 2021Equipment. Service Solution for Cummins PTO functionality error software level 81Z-006. Cascadia/Western Star 49X with Cummins engines combined with software level 81Z-006. A programming bug in the central gateway (CGW) for software level 81Z-006 will not allow completion of the preset #2 PTO engine speed.
• 10200621Aug 18, 2021Transmission and drivetrain. Freightliner Service Bulletin for Detroit New Final Drive (NFD) Rear Axle Temperature Parameters. Some New Cascadia trucks equipped with Detroit Diesel New Final Drive (NFD) axles have a high temperature warning parameter. The warning is set too low for some applications, and under certain conditions that are not harmful to the axle, the high temperature warning will appear on the dash and indicate an error…
• 10200709Aug 10, 2021Forward collision avoidance. Service Solution for Detroit Assurance Radar Front End Shipping Label. It has been reported that in some cases shipping labels may have been affixed to the inside center of the front cover on aftermarket parts. The shipping label has since been moved to the outer edge of the front cover, which should not affect the RDF's ability to properly sense obstacles located in front of the vehicle.
• 10200623Jul 22, 2021Visibility (wipers, defrost, mirrors). Freightliner Service Bulletin for Rain Sensor not Detecting Material on the Windshield. The rain light sensor (RLS) requires proper mounting and clear windshield visibility for auto wipe to function properly. It is always recommended when checking for proper operation of the RLS, that the sensor be properly fastened to its mounting bracket and that the gel is free of fingerprints and foreign material. Also ensure…
• 10199373Jul 16, 2021Suspension. Service Solution for Aero Height Control Interfering with RDF Alignment and 42/523004/13 and 232/524042/9 Active for vehicles equipped with Hadley Smart Valve. The Aerodynamic Height Control feature on the New Cascadia is a feature that raises and lowers the air suspension with relation to vehicle speed in order to reduce drag and achieve better fuel efficiency.
• 10199372Jul 16, 2021Fuel system. Service Solution for New Cascadia Fuel Sending Unit Connector Loose.
• 10199371Jul 14, 2021Forward collision avoidance, Lane departure. Service Solution for VRDU Fault Code 232/524000/19and 232/524049/19 – ECU CPC Data Error. This VRDU code typically sets after the VRDU gets reprogrammed and parameters to clear out. To prevent this from happening in the future, follow the programming guide laid out in SB 54-308.Parameter changes during flashing can occur if the programming steps are not followed.
• 10200620Jun 2, 2021Forward collision avoidance. Freightliner Service Bulletin for Detroit Assurance 4.0 Software v20.05. Cascadia trucks built from January 1, 2017 through September 9, 2019 and equipped with Detroit Assurance correctly initiate an active brake assist (ABA) event when a vehicle or obstacle is detected in front of the truck. Some of those trucks may continue decelerating to a complete stop, even after the vehicle or obstacle detected in front of…
• 10198593Jun 1, 2021Engine cooling, Forward collision avoidance. Freightliner Service Bulletin for Detroit Assurance 4.0 Software v20.05. New Cascadia trucks built from January 1, 2017 through September 9, 2019 and equipped with Detroit Assurance correctly initiate an active brake assist (ABA) event when a vehicle or obstacle is detected in front of the truck. Some of those trucks may continue decelerating to a complete stop, even after the vehicle or obstacle detected in front…
• 10194885May 26, 2021Electrical system. TechTalk Discussion GHG 17 Regens not Completing
• 10194803May 13, 2021Transmission and drivetrain. Tech Talk discussion on New Cascadia JJ8477 Secondary Air Pressure Drops in 10th Gear.
• 10194775May 13, 2021Vehicle speed control. Tech Talk discussion on new Cascadia cruise not working.
• 10194477May 12, 2021Equipment, Brakes. Customer Advisory Letter for Drive Axle Drum Brake S-Cam U-Bolt Replacement.
• 10200624Apr 27, 2021Visibility (wipers, defrost, mirrors). Freightliner Service Bulletin for Auxiliary Mirror Vibration. Cascadia trucks built from January 1, 2017 through June 16, 2020 may be equipped with auxiliary mirrors that vibrate or wobble. A service kit (part number 22-77791-500) is available to resolve the issue.
• 10190985Apr 26, 2021Visibility (wipers, defrost, mirrors). Updated Freightliner Service Bulletin for Adjusting Automatic Temperature Control Range with Optimized Idle. This bulletin replaces the version dated 12/06/2019. Tables 3 and 4 have been updated. Steps to change and match HVAC desired settings have been updated.
• 10191150Apr 23, 2021Visibility (wipers, defrost, mirrors). Service Solution for P4 Main Mirror Arm Covers Loose - Falling Off. Lower arm cover designs have clips that hold the cover on but over time the clips can fail and allow the covers to become loose or fall off.
• 10191149Apr 23, 2021Transmission and drivetrain. Service Solution for FTL DT12 Trans Control Harness Chaffing - PT Can faults. Transmission will not shift into Gear while driving or will not start and trigger multiple PT CAN Fault Codes.
• 10190554Apr 23, 2021Electrical system. Customer Advisory Letter for Battery Cable Access (BCA) 29A Cable Inspection.
• 10191143Apr 19, 2021Transmission and drivetrain. Detroit Field Service Campaign for DT12 Transmission Drive Shaft Cover Plug Reseal. Daimler Trucks North America LLC, on behalf of its DETROIT Powertrain Division, is initiating Field Service Campaign D21M1 on certain DT12 transmissions in order to reseal the bypass plugs of the drive shaft cover located in front housing.
• 10190555Apr 19, 2021Engine cooling. Detroit Technical Service Letter for DD13 Cylinder Head and Cylinder Head Gasket Change.
• 10190551Apr 19, 2021Engine cooling. Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown. The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
• 10191835Apr 6, 2021Engine cooling. Tech talk discussion on HC DOSER WILL NOT ACTIVATE DURING REGEN.
• 10190549Apr 6, 2021Equipment. Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021.
• 10201997Mar 29, 2021Equipment. DetroitConnect customer communication for certain vehicles unable to complete over the air updates including parameters and DDEC over the air.
• 10189619Mar 26, 2021Electrical system. Customer Advisory Letter for Customer Access to Fused Battery Power and Ground inside a Cascadia Cab vehicles built without a cab load disconnect switch (CLDS).
• 10189340Mar 24, 2021Equipment. Updated Freightliner Service Bulletin for Espar Service Information. This bulletin replaces the version dated January 1, 2015. New Cascadia has been added to the model list.
• 10198592Mar 23, 2021Visibility (wipers, defrost, mirrors). Updated Freightliner Service Bulletin for Updating HVAC ECU Software to Fix Front HVAC Evaporator Freezing and Improve Espar Heater Cool Down. This bulletin replaces the version dated 03/03/2021. Information on software versions and the number of software updates needed has been updated.
• 10189319Mar 22, 2021Equipment, Electrical system. Warranty Policy Letter for battery tags. DTNA determined that since adopting the AutoMeter BCT-460DTNA Powernet Assessment Tool (AutoMeter) as the required powernet system tester, not all battery tags have to be retained support Warranty-related claims.
• 10189338Mar 19, 2021Electrical system. Service Solution for New Cascadia Maintenance Indicator Issues. Some customers have reported incorrect or undesired pop up messages occurring in the ICC5 display and have requested field correction.
• 10189337Mar 19, 2021Electrical system, Lane departure. Service Solution for P4 New Cascadia Side Guard Radar Harness Moisture Intrusion. The 6-pin connector located at the side radar can show signs of water intrusion if wires are strained at the connector. Wires without strain relief can allow water to intrude past the seals, resulting in corrosion on the terminals and pins within the connector. Active fault codes for lost communication with RDU and SRRM, plus other…
• 10189345Mar 18, 2021Engine cooling. Customer Advisory Letter for DEF Header Replacement.
• 10189342Mar 17, 2021Brakes. Revised Customer Advisory Letter for ABS Warning Light Illumination with ABS code SA 11, SPN 629, FMI 11. REVISED: This CAL revises the CAL issued August 10th, 2020. Western Star 49X vehicles have been added to the CAL scope and instructions for downloading and installing software to address the ABS warning light illumination with ABS code SA 11, SPN 629, FMI 11 have replaced the corrective action of the previous…
• 10189348Mar 16, 2021Transmission and drivetrain. Detroit Field Service Campaign for DT12 Gear Grind During Downshift Software Update.
• 10189320Mar 16, 2021Engine cooling. Revised Freightliner Service Bulletin for netized Fill Neck for Six-Gallon DEF Tanks. A design change removed the magnets from the fill necks for some 6-gallon diesel exhaust fluid (DEF) tanks. If the vehicle is equipped with a non-magnetic fill neck 04-32529-000, it can be updated to a magnetic neck 04-32529-001. This bulletin replaces the version dated 04/18/2017. Updated availability of magnetic fill neck option…
• 10190020Mar 10, 2021Transmission and drivetrain, Equipment. DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing issues to the After Treatment Control Module (ACM). These fault codes indicated that the ACM communication message was not received by the Motor Control Module (MCM) which in certain cases, led to a 25% engine de-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and…
• 10189346Mar 5, 2021Electrical system. Customer Advisory Letter for Disabling the Park Brake Drag ICU Warning Message.
• 10189321Mar 4, 2021Equipment. Revised Freightliner Service Bulletin for New Cascadia Key Fob ID Retention. This bulletin replaces the version dated 8/15/2018. The guidance for locating the serial number for key fobs has changed. It is no longer necessary to document the serial number in PartsPro.
• 10189331Mar 3, 2021Visibility (wipers, defrost, mirrors), Equipment. Revised Freightliner Service Bulletin for Updating HVAC ECU Software to Fix Front HVAC Evaporator Freezing and Improve Espar Heater Cool Down. This bulletin replaces the version dated 12/23/2020. Information has been added about ParkSmart units and the instructions have been streamlined.
• 10189341Mar 1, 2021Other or unknown. Revised Customer Advisory Letter for Cascadia, New Cascadia, and 122SD Vehicles with Cracked Fifth Wheel Angles. Additional photos have been added.
• 10187532Feb 25, 2021Equipment, Engine cooling. Freightliner Service Bulletin for Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
• 10187594Feb 24, 2021Other or unknown, Equipment. Customer Advisory Letter for Cascadia, New Cascadia, and 122SD Vehicles with Cracked Fifth Wheel Angles
• 10187835Feb 19, 2021Engine cooling. Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available. Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
• 10188035Feb 18, 2021Electrical system. Tech Talk discussion on New Cascadia Dump Switch not working.
• 10188004Feb 18, 2021Engine cooling. Tech Talk discussion on CPC not flashing. Keeps crashing even with new CPC.
• 10187926Feb 18, 2021Forward collision avoidance, Lane departure. Tech Talk continued discussion on Detroit Assurance Radar Picking Up Overhead Signs.
• 10187844Feb 16, 2021Electrical system, Visibility (wipers, defrost, mirrors), Exterior lighting. Customer Maintenance Enhancements for the P4 Halogen Lamp replacement procedure.
• 10187524Feb 15, 2021Equipment. Superseding Letter to an Important Campaign Information Letter to announce a reimbursement available to dealers for travel to a customer's location to perform a recall or field service campaign. Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately. This letter supersedes ICI20-022R.
• 10187444Feb 15, 2021Engine cooling, Electrical system, Equipment. Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.

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