2012 Freightliner Cascadia Technical Service Bulletins

812 technical service bulletins (TSBs) are on record for the 2012 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.

• 10210548Apr 13, 2022Transmission and drivetrain. Important Campaign Information Letter for DDC D21M1 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to…
• 10209296Mar 2, 2022Engine cooling. Revised Freightliner Service Bulletin for ParkSmart Eberspaecher Auxiliary Heater Service. This bulletin replaces the version dated May 2015. The note in General Information has been revised to include New Cascadia. Espar information has been changed to reflect a company name change to Eberspaecher.
• 10207409Jan 3, 2022Body and structure. Revised Freightliner Service Bulletin for Insulating Pad for Solid Cast-Aluminum Rear Hood Support. Minor note: added an update of document previously submitted. The related VMRS codes are added
• 10207408Jan 3, 2022Body and structure. Revised Freightliner Service Bulletin for Braces for Cascadia Cab-Mounted Splash Shields. Minor note: added an update of document previously submitted. The related VMRS codes are added
• 10207407Jan 3, 2022Body and structure. Revised Freightliner Service Bulletin for Hood-Mounted Splash Shield Rivet Replacement. Minor note: added an update of document previously submitted. The related VMRS codes are added
• 10199899Jun 14, 2021Body and structure. End of Production for the Freightliner P3 Cascadia Sales Cabs. Due to low production volumes, DTNA will be discontinuing the production of the Freightliner Cascadia P3 Sales Cabs.
• 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.
• 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.
• 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.
• 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.
• 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.
• 10189910Mar 10, 2021Transmission and drivetrain, Equipment. Tech Talk discussion on not being able to do a forced regen because clutch is depressed.
• 10187532Feb 25, 2021Engine cooling, Equipment. Freightliner Service Bulletin for Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
• 10188013Feb 22, 2021Electrical system. Tech Talk discussion on P3 Intermittent 250k J1939 Failure.
• 10186641Jan 26, 2021Transmission and drivetrain. Tech talk continued discussion on 2021 Cascadia SOLO clutch not adjusting.
• 10185896Jan 17, 2021Engine cooling, Equipment. 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…
• 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.
• 10184029Dec 8, 2020Transmission and drivetrain, Steering. 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, 2020Transmission and drivetrain, Steering, Equipment. 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.
• 10183733Dec 6, 2020Engine cooling. Technical Service Letter for SPN 3711 FMI 31 on GHG17 DD15 Trucks.
• 10184911Dec 1, 2020Transmission and drivetrain. Tech Talk discussion on Cascadia no power to clutch switch.
• 10183955Nov 30, 2020Equipment, Fuel system, Engine cooling. Special Publication Letter for EPA07 EPA10 Three-Filter Fuel System DD15 DD16 Severe Duty High Pressure Fuel Rail Feed Lines Service Kit
• 10183954Nov 30, 2020Engine cooling, Fuel system, Equipment. Special Publication letter for Two-Filter Fuel System KM59 GEN1 DD15 DD16 Severe Duty High Pressure Fuel Rail Feed Lines Service Kit.
• 10183594Nov 26, 2020Equipment, Transmission and drivetrain. Tech Talk discussion on 2012 Cascadia SOLO Clutch not adjusting.
• 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…
• 10182021Oct 20, 2020Engine cooling, Equipment. Tech Talk discussion on truck came in with check engine light. spn 4334/fmi 7 def pressure low.
• 10181049Oct 7, 2020Transmission and drivetrain, Equipment. Freightliner Service Bulletin for Axle Flange Gasket Replaced with O-Ring. 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. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning…
• 10180350Sep 22, 2020Steering, Equipment. Tech Talk discussion about power steering fluid.
• 10180382Sep 15, 2020Engine cooling. Tech Talk discussion on repair verification for codes like 'low air flow' when a trailer is not available.
• 10179249Aug 31, 2020Electrical system, Equipment, Engine cooling. Customer Service Announcement for Release of DiagnosticLink 8.12 Service Pack 2. On Thursday, September 3, 2020, Service Pack (SP) 2 for DiagnosticLink 8.12 Standard and Professional will be made available to download from the Detroit Diesel server.
• 10179148Aug 25, 2020Engine cooling. Service Solution for P3 - CEL On and Engine de-rate due to ATD Chassis Harness Circuit 532M5+ at DEF Heater Supply location is shorted. Harness part number A66-03217-002 has been reported experiencing failures due to damages to 532M5+ circuit shorting /or corrosion in terminals at Connector (23-13053-200) harness location "ATD_CHAS_F_O_HTR_LINE_DEF_5B" .
• 10177606Jul 30, 2020Brakes. Freightliner Service Bulletin for Meritor Steer Axle Drum Brake Squeal. Some Cascadia and New Cascadia vehicles equipped with Meritor steer axle drum brakes with a front axle rating less than 13,300 lb (6038 kg) have experienced brake squealing noise when the service brakes are applied at lower speeds. NOTE: This is a nuisance noise issue and not a failure. The solution given in this service bulletin may fix this…
• 10177604Jul 28, 2020Equipment, Suspension. Freightliner Service Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change. With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/8 - 18 fasteners. This change includes a revision to a higher friction nut that requires an…
• 10177692Jul 27, 2020Engine cooling. Technical Service Letter for EPA10, GHG14, GHG17 Diesel Particulate Filter (DPF) Compatibility. Note: This document supersedes 14 TS-25 and 15 TS-8. Detroit Diesel has determined that some, Diesel Particulate Filters (DPFs) are compatible in pairs and or can be mixed together within EPA10 and GHG14 Systems. For 1-BOX and Two-Box Configuration Aftertreatment Systems (ATS), this is only possible when the filters are…
• 10177646Jul 23, 2020Visibility (wipers, defrost, mirrors). Service Bulletin for Reflective Tape Installation. If a truck tractor is ordered without mudflaps and/or mudflap support brackets, the rear reflective tape applied to the mudflaps or mudflap brackets during production is delivered loose with the vehicle. FMVSS/CMVSS 108 S5.7.1.4.3 requires reflective tape on all truck tractors domiciled in the United States and Canada.
• 10177648Jul 10, 2020Body and structure. Service Bulletin for Guidelines for Cleaning and Disinfecting Cab Surfaces. The following guidelines are for cleaning and disinfecting commonly touched surfaces on the inside and outside of a vehicle. For best results, follow cleaning and disinfecting procedures fully and consistently. Ensure there is adequate ventilation when using chemicals. NOTICE: Wipe down fragile components carefully to avoid damaging the…
• 10176997Jun 29, 2020Body and structure, Latches, locks and linkages. Service Bulletin for Chassis Side-Fairing Kickplate Magnet Replacement. On Freightliner Cascadia and New Cascadia vehicles manufactured before May 20, 2019, and equipped with side-fairings, the magnets that hold the kickplate closed may corrode and prevent the kickplate from staying in the closed position.
• 10174399Apr 29, 2020Exterior lighting. Service Bulletin for Marker Light Gasket Leaks, 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.
• 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.
• 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, 2020Electrical system, Back-over prevention (rear camera). 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…
• 10172025Mar 4, 2020Equipment. Open recall and Field service Campaigns report send out to Dealers, General Managers, Service managers and warranty managers
• 10171911Mar 2, 2020Electrical system. Customer Advisory Letter that an inspection to determine if the high current breaker has been bypassed.
• 10170320Jan 17, 2020Electrical system. Service Solution for Meritor Wabco OnGuard Radar Service Alignment. If the radar sensor needs to be aligned, the radar sensor mounting system has become damaged or has loosened, or new radar sensor software has been installed, a Radar Sensor Service Alignment will need to be performed.
• 10169693Jan 2, 2020Exterior lighting, Electrical system, Equipment. Service Solution for Legacy Cascadia, where trailer turn signals or 4-way flashers used in applications with high duty cycles, the left and right turn signals may experience shortened relay life.

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