AI Damage2020 Kenworth T680: common problems
The maker issued 60 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 60
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 0 | 0 | 20 |
| Engine and cooling | 0 | 0 | 13 |
| Electrical system | 0 | 0 | 11 |
| Equipment | 0 | 0 | 8 |
| Powertrain | 0 | 0 | 7 |
| Fuel system | 0 | 0 | 3 |
| Service brakes | 0 | 0 | 3 |
| Structure | 0 | 0 | 3 |
| Fuel/propulsion system | 0 | 0 | 2 |
| Visibility | 0 | 0 | 2 |
| Steering | 0 | 0 | 1 |
| Vehicle speed control | 0 | 0 | 1 |
| Wheels | 0 | 0 | 1 |
| Other | 0 | 0 | 1 |
Comparison
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.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This bulletin, the troubleshooting procedure, and the BMS Troubleshooting Checklist have been updated to…
This bulletin, the troubleshooting procedure, and the BMS Troubleshooting Checklist have been updated to show that the Autometer tool test results can be used in place of the Midtronics tool test results for fulfilling…
- "Kenworth
Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the…
- An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines
- The procedure has been updated to include additional steps for verifying the software level on the vehicle…
The procedure has been updated to include additional steps for verifying the software level on the vehicle electronic control unit (VECU2) and digital display (DD). Steps have also been added to the PACCAR Common Rail…
- This optional software update is now available for chassis equipped with EMY 2021B-2023 PACCAR MX-11 and…
This optional software update is now available for chassis equipped with EMY 2021B-2023 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks before a DEF-related…
- Incorrect air filters may be inadvertently installed in certain chassis equipped with under-hood Donaldson…
- The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to…
The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.
- "The software is not yet available
The bulletin will be updated when more information is available."
- Updated Eaton's TAIB0885EN Bulletin link
- "An optional software update will be available on 07/06/2026 for chassis equipped with EMY…
"An optional software update will be available on 07/06/2026 for chassis equipped with EMY 2021B-2023PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service theirtrucks before a…
- The PACCAR Powertrain Prognostics Webcast video link has been removed
It will be included with updated information at a later date.
- Kenworth - The Warranty section has been updated to include Peterbilt-specific SRT codes for…
Kenworth - The Warranty section has been updated to include Peterbilt-specific SRT codes for cross-division repair filing.
NHTSA lists 60 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 2020 Kenworth T680?
There are no owner complaints in the NHTSA data for this year; the data comes from 60 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2020 Kenworth T680?
NHTSA lists 60 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 2020 Kenworth T680 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 2020 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.