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Service bulletins for the 2021 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.

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

By type

By component

Bulletins, newest first
FleetCom_Pwr Steer Res2026-01-08. Other. STEERING. Fleet Communications for Power Steering Resevoir - NTF Replacements
FleetCom_Passive Lube2026-01-08. Other. POWER TRAIN. Fleet Communications for Detroit Axle NFD ALM to Passive Lube Management
FleetCom_Oil Plug Loc2026-01-08. Other. POWER TRAIN. Fleet Communications for NFD Lower Oil Plug Location - SP Axles
FleetCom_NFD Axle2026-01-08. Other. POWER TRAIN. Fleet Communications for Detroit NFD Axle - Factory Fluid Change
FleetCom_Mudflap Hanger2026-01-08. Other. UNKNOWN OR OTHER. Fleet Communications for Mudflap Hanger Bracket Fixturing
FleetCom_Heater Core2026-01-08. Other. ENGINE. Fleet Communications for Heater Core Plugging
FleetCom_Frnt Susp Spring2026-01-08. Other. SUSPENSION. Fleet Communications for Cascadia Front Suspension Spring Pin Bushings
FleetCom_ABS Wheel Spd2026-01-08. Other. SERVICE BRAKES. Fleet Communications for ABS Wheel Speed Sensor Faults
FleetCom_SS 3174-FTL2025-12-06. Other. ELECTRICAL SYSTEM. Fleet Communication for SS 3174-FTL
FleetCom_AMP Draw2025-12-06. Other. ELECTRICAL SYSTEM. Fleet Communications for Key off amp draw
FleetCom_SS 3163-FTL2025-12-06. Other. ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
FleetCom_Low Coolant2025-12-05. Other. ENGINE. Fleet Communications for Low Coolant Sensor
FleetCom_Bosch Steer Gear2025-12-05. Other. STEERING. Fleet communications for Bosch Steering Gear Replacements
CXA 10_25_Front Shock2025-11-06. Other. SUSPENSION. CX Advocate for 18k Front Suspension Shock Absorbers
CXA 10_25_Air Dryer Purge2025-11-06. Other. SERVICE BRAKES. CX Advocate for Experiencing Excessive Purging from Air Dryer
MYCOM_10302025-12025-11-05. Other. FUEL/PROPULSION SYSTEM. My Communications for Update to DTNA parts on UFU R61709
FAB3442025-11-05. Other. FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING. Features and Benefits for SafetyDirect 5.1
SS3076-FTL2025-11-05. Other. VISIBILITY/WIPER. Service Solution for P4 Main Mirror Arm Covers Loose - Falling Off
CXA_10_25_Tech Questions2025-11-05. Other. ELECTRICAL SYSTEM; POWER TRAIN. CX Advocate for technical questions/issues raised
CXA_10_25_Low Coolant2025-11-05. Other. ENGINE. CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CXA_10_25_Conmet Oil Pan2025-11-05. Other. ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Issues
SF721-OWN LTR2025-10-03. Service campaign. SUSPENSION. Field Service Campaign for SF721 18k Front Suspension Shock Absorbers
SF721-DLR LTR2025-10-03. Service campaign. SUSPENSION. Field Service Campaign for SF721 18k Front Suspension Shock Absorbers
SF721-Bulletin2025-10-03. Service campaign. SUSPENSION. Field Service Campaign for SF721 18k Front Suspension Shock Absorbers
CXA_9_25_Tech Questions2025-10-03. Other. POWER TRAIN; ENGINE. CX Advocate for technical questions/issues raised

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