Vehicle report

2023 KENWORTH T800B

Service bulletins

13 bulletins

Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.

24KWL/PBL

Service Bulletin/Repair Instructions

The verbiage in the Introduction section has been updated.

43-087

Service Bulletin/Repair Instructions

(KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation.

45-070

Service Bulletin/Repair Instructions

The attached procedures document has been updated with more detail and explanations. This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.

14-034

Service Bulletin/Repair Instructions

Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.

24KWD

Service Bulletin/Repair Instructions

Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume requirements per FMVSS/CMVSS 121 “Air Brake Systems”. This bulletin will be updated when repair parts and procedures are available.

23KWK

Service Bulletin/Repair Instructions

Safety Recall Repair parts and procedures are now available. On certain Kenworth model years 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, a spacer was installed on the seatbelt mounting assembly. In a severe collision, the ICP bar may fail, increasing the risk of injury.

E290

Service Bulletin/Repair Instructions

FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information

E300

Service Bulletin/Repair Instructions

PACCAR will reimburse customers for the local purchase of in-tank fuel additive for EPA2021 compliant MX engines. This is a one-time reimbursement. Only customers who have received E290 injector cleaning qualify for this reimbursement. See bulletin for limits and purchase tracking requirements.

45-064

Service Bulletin/Repair Instructions

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 existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles.

E296

Service Bulletin/Repair Instructions

Kenworth 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 repaired, can lead to severe engine damage.

S016

Service Bulletin/Repair Instructions

​Chassis were shipped without door stop plates installed due to a supplier shortage. Parts kits are now available and shipped to dealers. Installation procedures and warranty information have been included. Cotter pins are not included in the parts kit and will need to be locally sourced.

S017

Service Bulletin/Repair Instructions

Due to a global chip shortage, certain chassis will be shipped without the Bendix side object detection radar modules and A-pillar displays. Refer to Sales Bulletin TE2680 for details.

FS010

Service Bulletin/Repair Instructions

Certain T680 NextGen chassis equipped with an RCX230 Horton fan clutch and a Cummins X15 engine are experiencing an adapter harness failure. This failure causes the fan to remain activated while the truck is in operation and may trigger a check engine light and diagnostic trouble codes.

Reading this report

Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.