2018 Kenworth K370: common problems
The maker issued 12 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 12
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 5 |
| Equipment | 0 | 0 | 3 |
| Engine | 0 | 0 | 1 |
| Engine and cooling | 0 | 0 | 1 |
| Fuel system | 0 | 0 | 1 |
| Powertrain | 0 | 0 | 1 |
| Service brakes | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
| Vehicle speed control | 0 | 0 | 1 |
| Visibility | 0 | 0 | 1 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- 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.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- "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…
- Info Only Dealers/body builders installing liftgates onto K270E/K370E BEV trucks must use 24-volt liftgate…
Info Only Dealers/body builders installing liftgates onto K270E/K370E BEV trucks must use 24-volt liftgate systems. 12-volt liftgate systems are not compatible with vehicle electrical systems.
- Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis…
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the…
- Fix-As-Fail â Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are…
Fix-As-Fail â Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software…
- Information Only â Windshield washer pumps have a high No Trouble Found rate
Washer pumps may fail to spray due to a clogged filter.
- Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch…
Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
- Fix-As-Fail - Bendix New-Gen Lightweight Steer Axle Drum Brake Spider Cracking
- Information Only
This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or…
- DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank…
DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to…
- Information Only â Vehicles may have the connector seals on the wheel speed sensor incorrectly…
Information Only â Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
- Information Only
Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
- Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues…
Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
Other years of this model
Questions and answers
What are the most common problems with the 2018 Kenworth K370?
There are no owner complaints in the NHTSA data for this year; the data comes from 12 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2018 Kenworth K370?
NHTSA lists 12 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 2018 Kenworth K370 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 2018 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.