AI Damage2021 Freightliner Cascadia: common problems
The maker issued 507 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 507
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 114 |
| Equipment | 0 | 0 | 108 |
| Engine and cooling | 0 | 0 | 82 |
| Powertrain | 0 | 0 | 78 |
| Engine | 0 | 0 | 49 |
| Visibility | 0 | 0 | 37 |
| Service brakes | 0 | 0 | 36 |
| Lane departure | 0 | 0 | 20 |
| Steering | 0 | 0 | 19 |
| Suspension | 0 | 0 | 18 |
| Structure | 0 | 0 | 15 |
| Exterior lighting | 0 | 0 | 11 |
| Fuel system | 0 | 0 | 11 |
| Forward collision avoidance | 0 | 0 | 9 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
- Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles
Updated frequently asked questions.
- CX Advocate for Utility Lamp water intrusion
- Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
- CX Advocate for P4 Side Guard Assist On/Off Menus and Trailer Functionality (TSB-54-381-FTL)
- Important Campaign Information for SF706 - Revised, Reactivated
- Revised Field Service campaign for Cascadia Axle Conversion
Adaptive Tandem (AT) 6x4 to New Final Drive (NFD)
- Fleet Communications for solenoid issues
- CX Advocate for 1810/02 ABS longitudinal acceleration fault (TSB-54-104-WST,TSB-54-379-FTL)
- Important Campaign Information letter for SF706 - campaign suspended
- Fleet Communications for composite front suspension bushing
- Fleet Communications for SF706 - Cascadia axle conversion
NHTSA lists 507 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2021 Freightliner Cascadia?
There are no owner complaints in the NHTSA data for this year; the data comes from 507 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 Freightliner Cascadia?
NHTSA lists 507 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Freightliner Cascadia from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.