2015 Kenworth T680 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 13%of 8 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2015 Kenworth T680, 13% of the 8 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2015 Kenworth T680. The contact stated while driving at 55 MPH, he noticed smoke coming through the AC vents and from underneath the hood of the vehicle. There was no warning light illuminated. The contact veered to the side of the road and opened the hood of the vehicle. The contact noticed that the water pump was leaking and one of the hose pipe was cracked. The contact was able to drive the vehicle to a nearby independent mechanic. The independent mechanic diagnosed that the water pump and the hose pipe needed to be replaced. …”
NHTSA complaint #11485741, filed 2022-09Related service bulletins
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- 10232496Feb 24, 2023Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be…
- 10218895Aug 3, 2022Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to provide warrantable repair guidance. Oil leaks, if not…
- 10199944Jul 20, 2021Emissions Recall - PACCAR MX-13 Engine Model Year 2015B engines require a software update to ensure emissions compliance for On-Board Diagnostic (OBD).
- 10198762Jun 14, 2021Information Only â C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter (PM)…
- 10198760Jun 8, 2021An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
- 10188468Feb 25, 2021Non-Safety Campaign â Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
- 10169706Dec 19, 2019Emissions Campaign â The Engine Overspeed lamp may illuminate during a smoke opacity test. A software update is available to resolve the issue.
- 10168709Nov 21, 2019Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine. An improved suction line has been released that removes stress transferred to the evaporator core.
- 10168703Nov 6, 2019Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2017 | 1 | 11% |
| 2015 | 1 | 13% |
Other parts of the 2015 Kenworth T680
2 complaintsEngine
2 complaintsFuel system
2 complaintsElectrical system
1 complaintsExterior lighting
1 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2015 Kenworth T680
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology