Kenworth W900: problems, complaints, bulletins
Summary for the Kenworth W900 across 10 model years: 0 owner complaints and 69 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 0 | 0 | 54 |
| Engine and cooling | 0 | 0 | 50 |
| Electrical system | 0 | 0 | 34 |
| Equipment | 0 | 0 | 34 |
| Service brakes | 0 | 0 | 21 |
| Seat belts | 0 | 0 | 14 |
| Seats | 0 | 0 | 14 |
| Powertrain | 0 | 0 | 12 |
| Fuel system | 0 | 0 | 10 |
| Structure | 0 | 0 | 10 |
| Visibility | 0 | 0 | 10 |
| Fuel/propulsion system | 0 | 0 | 9 |
| Steering | 0 | 0 | 7 |
| Forward collision avoidance | 0 | 0 | 5 |
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- "Kenworth
- This optional software update is expected to be available after 08/28/2026
- This optional software update is expected to be available in late August 2026 for chassis equipped with…
- This optional software update is expected to be available in late August 2026 for chassis equipped with…
- The verbiage in the Introduction section has been updated
- This optional software update is expected to be available on 08/07/26 for chassis equipped with EPA 2024…
- The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to…
- The attachment for Eaton bulletin TAIB-1015 has been updated to the latest version to improve process flow
- The PACCAR Powertrain Prognostics Webcast video link has been removed
- Kenworth - The Warranty section has been updated to include Peterbilt-specific SRT codes for…
- EMY21-25 GHG Label Replacement (KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels…
- KW & PB DEF Quality Sensor part number Q21-6127-001 for Cummins X15 engines has been added to this…
Other models of this make
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.