Vehicle report

2011 KENWORTH T400

Service bulletins

19 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.

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.

02-160

Service Bulletin/Repair Instructions

Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.

32-015

Service Bulletin/Repair Instructions

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 incomplete information.

32-016

Service Bulletin/Repair Instructions

Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.

34-085

Service Bulletin/Repair Instructions

Information Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.

03-071

Service Bulletin/Repair Instructions

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.

01-075

Service Bulletin/Repair Instructions

Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.

TIB43-062

Service Bulletin/Repair Instructions

Information Only – This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).

TIB-03-047

Service Bulletin/Repair Instructions

KENWORTH: DIAGNOSTICS INDICATE FAILED FUEL LEVEL SENSOR FUNCTION IN REPAIRS AND BEFORE COMPONENT IS REPLACED, DIAL FACE SHOULD BE CLEANED AND FAILURE VERIFIED. ALL KENWORTH MODELS WITH OHM DIAL OR OPEN CARD STYLE FUEL SENDERS. *PE

TIB-36-003

Service Bulletin/Repair Instructions

KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN CHASSIS, THE TRANSMISSION TEMPERATURE FAILS TO BE ON THE NAVPLUS DRIVER DISPLAY AND CERTAIN CAUTIONS AND WARNINGS APPROPRIATE FOR HIGHWAYS NEEDS TO BE DISABLED FOR RESIDENTIAL AREAS. *PE

TIB-43-025

Service Bulletin/Repair Instructions

KENWORTH: THE STANDARD PRODUCTION COMPONENTS ARE REPLACING THE PRE-PRODUCTION COMPONENTS. *PE

TIB-16-35

Service Bulletin/Repair Instructions

KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE FRONT AXLE U BOLTS WERE MANUFACTURED ON CERTAIN T3 AND T4 SERIES TRUCKS WITH INSUFFICIENT TORQUE. *PE

TIB-03-042

Service Bulletin/Repair Instructions

PACCAR: THE FUEL SENSORS MIGHT NOT HAVE A SEALANT PLUG WHICH COULD LEAD TO WATER INTRUSION, CORROSSION, AND FALSE READINGS. *RM

TIB-41-014

Service Bulletin/Repair Instructions

PACCAR: THERE ARE COOLING MODULES THAT MAY HAVE A LOOSE CONNECTION AT THE CHARGE AIR COOLER MOUNTING. *RM

TIB-42-043

Service Bulletin/Repair Instructions

PACCAR: INFORMATION ON FAN HUB BEARINGS INSPECTION AND WARRANTY EXTENSION DUE TO A HIGHER THAN NORMAL FAILURE RATE. *RM

TIB-42-48

Service Bulletin/Repair Instructions

PACCAR: INFORMATION ON PREMATURE FAN CLUTCH LINING WEAR. *RM

TIB-43-019

Service Bulletin/Repair Instructions

PACCAR: THE CHASSIS NEED PRE-PRODUCTION PARTS REMOVED AND RETROFITTED WITH PRODUCTION PARTS. *RM

43-020

Service Bulletin/Repair Instructions

PACCAR: THE CHASSIS NEEDS TO HAVE PRODUCTION PARTS INSTALLED AND PRE-PRODUCTION PARTS REMOVED. *RM

TIB-99-018

Service Bulletin/Repair Instructions

KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. DOOR LABEL (GAWR, GVWR) REPLACEMENT CAMPAIGN. THE GROSS AXLE AND GROSS VEHICLE WEIGHT RATINGS (GAWR AND GVWR RESPECTIVELY) LISTED ON THE DOOR CERTIFICATION LABEL, MAY HAVE NOT BEEN ROUNDED APPROPRIATELY DUE TO A CONVERSION FACTOR ISSUE AT ONE OF THE PLANTS. CSC LETTER HAS BEEN RECEIVED. *PE

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.