Service bulletins for the 2019 Freightliner Cascadia
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
771 on file from NHTSA, as of 2026-10-19.
By type
By component
| FAB154 | 2021-05-18. Service bulletin. VISIBILITY; STRUCTURE. Freightliner Action Bulletin FAB154 New options for Cascadia |
|---|---|
| FAB153 | 2021-05-18. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Freightliner Action Bulletin FAB153 New Harness Highway for Cascadia |
| FAB146 | 2021-05-18. Service bulletin. VISIBILITY; EXTERIOR LIGHTING. Freightliner Action Bulletin FAB146 Cascadia LED headlights |
| FAB145 | 2021-05-18. Service bulletin. STRUCTURE. Freightliner Action Bulletin FAB145 New Cascadia Roof Fairing |
| FTLCAE182-2017 | 2021-05-17. Service bulletin. POWER TRAIN; EQUIPMENT. New DT12 Transmission for Original Cascadia |
| FTLCAE173-2017 | 2021-05-17. Service bulletin. EQUIPMENT; POWER TRAIN. Air-to-Oil Coolers for DT12 in New Cascadia |
| FTLCAE172-2017 | 2021-05-17. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; EQUIPMENT. New Accuride Aluminum Wheels |
| FTLCAE167-2016 | 2021-05-17. Service bulletin. VISIBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Important Update for Parked HVAC System Options |
| TK-APU | 2021-05-10. Service bulletin. ELECTRICAL SYSTEM. Evolution APU No Regen. |
| TechTalk566291K | 2021-05-07. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion on Software Warning Error. |
| TechTalk33525 | 2021-05-06. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. Tech Talk discussion on 520240 19 VRDU. |
| SS3076-FTL2021 | 2021-05-01. Service bulletin. VISIBILITY. 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. |
| SS3075-FTL2021 | 2021-05-01. Service bulletin. POWER TRAIN. 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. |
| CALFTL40-001 | 2021-05-01. Service bulletin. TIRES. Customer Advisory Letter for Tire Valve Stem Inspection. |
| D21M1 | 2021-05-01. Service bulletin. POWER TRAIN. 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. |
| SB54-322 | 2021-04-28. Service bulletin. VISIBILITY. 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. |
| 16TS-08REV | 2021-04-24. Service bulletin. ENGINE AND ENGINE COOLING. Detroit Technical Service Letter for DD13 Cylinder Head and Cylinder Head Gasket Change. |
| CALFTL54-016 | 2021-04-24. Service bulletin. ELECTRICAL SYSTEM. Customer Advisory Letter for Battery Cable Access (BCA) 29A Cable Inspection. |
| WI21-009 | 2021-04-24. Service bulletin. ENGINE AND ENGINE 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. |
| WI21-008 | 2021-04-23. Service bulletin. EQUIPMENT. 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. |
| DT12 Trans Chafe | 2021-04-08. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. 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 contacting the transmission TCU case. To reduce potential chafing areas, the proposed short-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions. |
| TechTalk8160K | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Tech Talk continued discussion on Alternator Overcharging with A/C switch On only (also reported as Tech Talk 9016). |
| TechTalk12363K | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. Tech Talk discussion on trailers older than 2016, the trailer lights will not come on. Newer trailers work fiine. |
| TechTalk12338K | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. Tech Talk discussion on starter relay wire stays hot. |
| TechTalk12299K | 2021-04-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Tech Talk discussion on the Vehicle power distribution model (VPDM) cover and vehicle literature discrepancy. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.