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Service bulletins for the 2020 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.

661 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
CALFTL54-0092021-05-25. Service bulletin. SERVICE BRAKES; SERVICE BRAKES, AIR. Customer Advisory Letter on New Cascadia ABS Fault Codes 520216/31 and 629/11
CALFTL54-0022021-05-25. Service bulletin. ELECTRICAL SYSTEM; PARKING BRAKE. Customer Advisory Letter on Enabling Horn Alarm with the Door Open and the Park Brake Set
SB72-402021-05-24. Service bulletin. STRUCTURE:FRAME AND MEMBERS; STRUCTURE:BODY. On Cascadia vehicles built from November 25, 2013, the drain holes at the bottom of the cab doors were enlarged to improve drainage during the e-coat process in the manufacturing plant. The larger holes allow more cold air to flow through the doors, most noticeably in extreme cold conditions.
FAB2502021-05-19. Service bulletin. UNKNOWN OR OTHER. Freightliner Action Bulletin FAB250 cascadia sales data bo-2020-07-02
FAB2492021-05-19. Service bulletin. UNKNOWN OR OTHER. Freightliner Action Bulletin FAB249 cascadia adr dealer bu-2020-07-02
FAB2092021-05-19. Service bulletin. POWER TRAIN. Freightliner Action Bulletin FAB209 DT12 PTO
WSTCAE171-20192021-05-18. Service bulletin. EQUIPMENT; FUEL SYSTEM, OTHER; POWER TRAIN. Allison FuelSense 2.0
FAB1582021-05-18. Service bulletin. POWER TRAIN. Freightliner Action Bulletin FAB158 Cummins Eaton SmartAdvantage
FAB1542021-05-18. Service bulletin. VISIBILITY; STRUCTURE. Freightliner Action Bulletin FAB154 New options for Cascadia
FAB1532021-05-18. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Freightliner Action Bulletin FAB153 New Harness Highway for Cascadia
FAB1462021-05-18. Service bulletin. VISIBILITY; EXTERIOR LIGHTING. Freightliner Action Bulletin FAB146 Cascadia LED headlights
FAB1452021-05-18. Service bulletin. STRUCTURE. Freightliner Action Bulletin FAB145 New Cascadia Roof Fairing
FTLCAE182-20172021-05-17. Service bulletin. POWER TRAIN; EQUIPMENT. New DT12 Transmission for Original Cascadia
FTLCAE173-20172021-05-17. Service bulletin. EQUIPMENT; POWER TRAIN. Air-to-Oil Coolers for DT12 in New Cascadia
FTLCAE172-20172021-05-17. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; EQUIPMENT. New Accuride Aluminum Wheels
FTLCAE167-20162021-05-17. Service bulletin. VISIBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Important Update for Parked HVAC System Options
TK-APU2021-05-10. Service bulletin. ELECTRICAL SYSTEM. Evolution APU No Regen.
TechTalk566473K2021-05-07. Service bulletin. SERVICE BRAKES, HYDRAULIC. Tech Talk discussion on DT12 Countershaft Brake Learn Dynamic Values.
TechTalk5660052021-05-06. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, AIR. Tech Talk discussion on P4 New Cascadia ABS Fault Code 520247 31 --Failure Memory Bit (ESC) Condition Exists.
TechTalk80602021-05-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE AND ENGINE COOLING. Tech Talk continuing discussion on CGW lost communication with cpc.
TechTalk181412021-05-05. Service bulletin. SERVICE BRAKES, AIR; ELECTRICAL SYSTEM. Tech Talk discussion on Cascadia glider issues.
SS3076-FTL20212021-05-01. 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-FTL20212021-05-01. 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.
CALFTL40-0012021-05-01. Service bulletin. TIRES. Customer Advisory Letter for Tire Valve Stem Inspection.
D21M12021-05-01. 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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.