2020 Kenworth T470 TSBs
20 Technical Service Bulletins across 11 categories
Categories
Electrical
6 bulletinsFix-As-Fail Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available.
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As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue operation with a failed DEF sensor by disabling the DEF sensor diagnostics.
Safety Recall - Model year 2021 Cummins PX9 fuel hose assemblies may leak from the hoses between the fuel pump and the remote filter head.
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A fuel leak in the presence of an ignition source may increase the risk of a fire. A repair is now available.
Safety Recall Cummins Fuel Rail Leak NHTSA ID: 21V391 / TC: 2021-323, Cummins Recall: C2423.Cummins PX9 and ISX12 fuel...
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rails may leak around a sealing washer, potentially resulting in fuel leaks.Undetected prolonged diesel fuel spray in the presence of an ignition source may increase the risk of fire.
Fix-As-Fail The Battery Management System (BMS) may report the incorrect battery condition.
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Additional diagnostics are available to correctly determine and repair the root cause of the issue.
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the...
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appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
Other
2 bulletins"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes.
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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 chassis list."
Information only: In 2020, Peterbilt and Kenworth began using the same M10, M12, M16, and M20 frame fasteners on all vehicles.
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Torque specifications for these fasteners are different from previous fasteners.
Software & Calibration
2 bulletinsBogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.
Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer.
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The issue can be temporarily resolved using any one of the included procedures.
Engine
2 bulletinsSAFETY RECALL Additional chassis have been included.
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The chassis list has been updated. Certain T370 / T440 / T470 / T480 / T660 / T680 / T800 / T880 / W900 / C500 chassis may be equipped with air tank reservoirs that have less than twelve times the combined volume of all service brake chambers which fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) No.121, Air Brake Systems.
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with...
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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.
Fuel System
2 bulletinsDue to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile...
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Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation
Non-Safety Campaign - Certain chassis equipped with certain Goodyear tires received a Greenhouse Gas (GHG) label that...
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does not reference the correct tire emissions identifier related to new rolling resistance data.
Brakes
1 bulletinCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume...
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requirements per FMVSS/CMVSS 121 Air Brake Systems. This bulletin will be updated when repair parts and procedures are available.
Steering
1 bulletinSafety Recall Interim Notification - The Dana D-Series front axle steer arm fasteners that attach the steer arm to the...
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steering knuckle may fail, increasing the risk of a crash or injury. Repair information will be added when a repair procedure and parts are available.
Body & Paint
1 bulletinInformation Only Windshield washer pumps have a high No Trouble Found rate.
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Washer pumps may fail to spray due to a clogged filter.
Transmission
1 bulletinFix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator...
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(LCA) fault codes leading to possible LCA hardware replacement.
HVAC & Climate
1 bulletinInformation Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the...
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A/C compressor.
Pre-Delivery & Maintenance
1 bulletinInformation Only This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke...
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Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).