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
| TechTalk12324K | 2021-04-05. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion regarding an engine that will not stay running. |
|---|---|
| CALFTL54-004 | 2021-03-31. Service bulletin. ELECTRICAL 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). |
| SF619 | 2021-03-31. Service bulletin. ENGINE AND ENGINE COOLING. Field Service Campaign for Cascadia Cummins Natural Gas Engine Exhaust Shield. On certain vehicles, there may be early heat degradation at the front right cab mount due to excessive heat exposure. An exhaust shield will be installed on all vehicles involved. |
| D21M3 | 2021-03-31. Service bulletin. POWER TRAIN. Detroit Field Service Campaign for DT12 Gear Grind During Downshift Software Update. |
| CALFTL54-015 | 2021-03-26. Service bulletin. ELECTRICAL SYSTEM. Customer Advisory Letter for Disabling the Park Brake Drag ICU Warning Message. |
| CALFTL54-010REV3 | 2021-03-26. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. 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 CAL. |
| CALFTL31-003REV | 2021-03-26. Service bulletin. TRAILER HITCHES. Revised Customer Advisory Letter for Cascadia, New Cascadia, and 122SD Vehicles with Cracked Fifth Wheel Angles. Additional photos have been added. |
| SB83-155 | 2021-03-26. Service bulletin. EQUIPMENT. 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. |
| SS3071FTL2021 | 2021-03-25. Service bulletin. ELECTRICAL 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. |
| SS3070FTL2021 | 2021-03-25. Service bulletin. ELECTRICAL 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 codes for CPC, CGW and ABS. |
| SB54-338 | 2021-03-24. Service bulletin. VISIBILITY; 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. |
| SB54-305 | 2021-03-24. Service bulletin. EQUIPMENT. 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. |
| SB49-038 | 2021-03-24. Service bulletin. ENGINE AND ENGINE 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 for other diesel exhaust fluid (DEF) tank part numbers. |
| WP21-007 | 2021-03-24. Service bulletin. EQUIPMENT; 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. |
| TechTalk7873K | 2021-03-05. Service bulletin. EQUIPMENT. Tech Talk discussion on Connecting to ESPAR with EDITH. |
| TechTalk7907K | 2021-03-05. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion on acm ambient air temp is maxed out. |
| TechTalk9016 | 2021-03-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Tech Talk discussion on Alternator Overcharging with A_C switch On only. |
| TechTalk9049 | 2021-03-05. Service bulletin. ELECTRICAL SYSTEM. Tech Talk discussion on CASCADIA FAULT 168 FMI 9. |
| TechTalk8126 | 2021-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion on D20M8 having updates greater than Recall requires in server. |
| TechTalk8133 | 2021-03-03. Service bulletin. SERVICE BRAKES. Tech Talk discussion on MERITOR EX+ AIR DISK BRAKES OUT OF SPEC ROTOR THICKNESS. |
| TechTalk8112 | 2021-03-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Tech Talk discussion on chasing a delay crank on P4. |
| TechTalk8156 | 2021-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion on DPF inspection. |
| TechTalk4855 | 2021-03-02. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM. Tech Talk continued discussion for P4 Next Gen Cascadia dome lights stay on while driving. |
| WI21-004 | 2021-03-02. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. 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. |
| P4HALOGENUPDATE | 2021-03-02. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Customer Maintenance Enhancements for the P4 Halogen Lamp replacement procedure. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.