AI Damage2021 Western Star 47X: common problems
The maker issued 81 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 81
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 0 | 0 | 27 |
| Visibility | 0 | 0 | 17 |
| Electrical system | 0 | 0 | 14 |
| Exterior lighting | 0 | 0 | 13 |
| Powertrain | 0 | 0 | 10 |
| Steering | 0 | 0 | 3 |
| Equipment | 0 | 0 | 2 |
| Service brakes | 0 | 0 | 2 |
| Vehicle speed control | 0 | 0 | 2 |
| Wheels | 0 | 0 | 2 |
| Engine and cooling | 0 | 0 | 1 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
Comparison
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- CX Advocate for X-Series HD Front Suspension Threaded
- Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
- Fleet Communications for Heater Core Plugging
- Revised Service Solution for Western Star vehicles with excessive water intrusion into the air system
- CX Advocate for Questions/Issues Raised
- Technical Service Bulletin for Fixing Unintended Wiper Sweep
- CX Advocate for technical questions/issues raised
- CX Advocate for ConMet Oil Pan Insert Additional Issues
- My Communications for UFI 0-Ring Announcement
- Service Solution for DT12 Oil Plug Ports
- Service Solution for ECP Solenoid Valve Interim Replacement Parts
- Features and Benefits for Detroit Connect UpfrontService Extension
NHTSA lists 81 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 Western Star 47X?
There are no owner complaints in the NHTSA data for this year; the data comes from 81 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 Western Star 47X?
NHTSA lists 81 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 Western Star 47X 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.