2009 Kenworth T660
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Kenworth › T660 › 2009
These records cover every 2009 Kenworth T660. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
17 recalls name the 2009 Kenworth T660. Newest first.
PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles. The air tanks have an insufficient volume of air…
Risk and remedy
Risk
Insufficient air volume can reduce braking performance and increase the risk of a crash.
Remedy
Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 24KWD.
PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In the event that the Anti-lock Brake System (ABS) loses battery and/or ignition power…
Risk and remedy
Risk
If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
Remedy
PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's number for this recall is 20pbc AND 20KWB.
Paccar IS recalling certain model year 2007-2011 kenworth C500, t2000, T600, and T660, as well as model year 2009-2011 peterbilt 387 and 388 trucks equipped with caterpillar C15 engine and manufactured from may 11, 2006, through september 17, 2010. degradation of a combustion tube weld can cause radial heat impingement on the body which may burn through…
Risk and remedy
Risk
This could result in a fire.
Remedy
Caterpillar IS handling the owner notification and remedy for this campaign. please see caterpillar's defect report 11e-006. Caterpillar will replace the single piece combustion tube with a thick wall combustion tube which will not allow the heat to break through. this service will be performed free of charge. Due to a parts supply issue, owners will be notified by the end of april 2011 about the safety defect, and will then be notified again once the free remedy IS available, currently estimated to be around late july 2011. owners may contact caterpillar toll-free at 1-800-447-4986.
Paccar IS recalling certain model year 2008-2012 kenworth t2000, T660, T700, T800, and W900, as well as model year 2009-2012 peterbilt 365, 367, 384, 386, 387, 388, 389, and 587 trucks equipped with paccar MX engines. the oil module centrifugal spinner filter cap in the paccar MX engine may become loose, possibly allowing the cap to come off and engine oil…
Risk and remedy
Risk
The discharge of engine oil onto exhaust components which are hot, such as when the engine IS under significant load, may cause a fire.
Remedy
Dealers will re-torque the oil module filter cap and install a secondary retention device on the secondary centrifugal spinner filter cap. this service will be performed free of charge. the safety recall IS expected to begin during march 2011. owners may contact kenworth at 1-425-828-5440 and peterbilt at 1-940-591-4196.
Paccar IS recalling certain model year kenworth T660, T700, T800 and W900 vehicles manufactured from december 22, 2008, through august 2, 2010, and equipped with ag400l air disc brakes. the air disc brake caliper could be installed on the wrong side of the drive axle potentially causing interference with the suspension bracket and the rear suspension as…
Risk and remedy
Risk
As this interference gets larger, this could eventually lead to reduced braking performance, increasing the risk of a crash.
Remedy
Dealers will verify the correct orientation of the brake caliper and perform the necessary repair free of charge. the safety recall began on november 24, 2010. owners may contact kenworth at 425-828-5440.
Paccar IS recalling certain model year 2008-2010 trucks equipped with trw steering shafts. the circumferential weld around the steering shaft tube that welds the splined tube to the non-splined tube may be mislocated. mislocation of the circumferential weld may allow the splined tube and non-splined tube to rotate relative to one another during a low…
Risk and remedy
Risk
A separation of the splined and non-splined tubes would cause a loss of steering control and increase the risk of a vehicle crash.
Remedy
Dealers will inspect the steering shaft using a weld placement gauge provided by trw. any steering shaft found to have been welded improperly will be replaced free of charge. the safety recall began on july 30, 2010. owners may contact kenworth at 425-828-5440 and peterbilt at 940-591-4196.
Kenworth IS recalling certain model year 2009 through 2010 T660 tractor trailors manufactured from july 1, 2008 through july 31, 2009. the retaining pins securing the hood strut lock tube to the hood strut assembly may become loose and fall out allowing the lock tube to rotate on the strut assembly. in its normal operation the safety latch feature IS…
Risk and remedy
Risk
A non-operational safety latch feature may not be detected by an operator increasing the risk of personal injury and/or vehicle damage should the hood unexpectedly close.
Remedy
Dealers will replace the pivot disc and lock tube retaining pins with a revised pivot disc and cap screws. this service will be performed free of charge. the safety recall began on july 15, 2010. owners may contact kenworth at 1-425-828-5440.
Kenworth IS recalling model year 2009 through 2010 t2000, T800, T660 and W900 trucks manufactured between november 12, 2008 and september 30, 2009. the axle u-bolts attaching the axle to the suspension leaf spring on certain ag400l rear suspensions may have received insufficient fastener torque during the installation process. the insufficient torque may…
Risk and remedy
Risk
If multiple fasteners were to become loose, the rear axle may shift relative to the rear suspension leaf spring, which can result in loss of control and a crash.
Remedy
Dealers will inspect the axle u-bolts for visible defects, including bent and/or smashed threads and re-torque the axle u-bolts to factory specifications. the recall began on november 4, 2009. owners may contact kenworth at 425-828-5440.
Paccar IS recalling 2,096 my 2009 kenworth and peterbilt vehicles equipped with trw steering shafts. mislocation of a circumferential weld may allow the splined tube and non-splined tube to rotate relative to one another during a low speed, high torque turn, possibly resulting in a separation of the two tubes.
Risk and remedy
Risk
A separation of the splined and non-splined tubes could cause a loss of steering control and increase the risk of a crash.
Remedy
Dealers will inspect the steering shaft using a weld placement gauge and miswelded steering shaft will be replaced free of charge. the recall began july 31, 2009. owners may contact kenworth at 1-425-828-5440 and peterbilt at 1-940-591-4196.
Kenworth IS recalling 3,423 my 2004-2009 t2000, t800,t600, W900 and T660 vehicles. increased brake excitation in a certain vehicle configuration which includes bendix drum brakes, wide base low profile single tires, and an ag400 or ag460 rear suspension, due to its unique brake clocking and cam tube length, can cause fatigue and cracking to brake assembly…
Risk and remedy
Risk
Cracking can cause a complete fracture of the cam tube, which could increase stopping distance and decrease parking brake hold capability.
Remedy
Dealers will inspect the rear axle brakes assembly, replace cracked rear axle brakes assembly components where required, and install cam tube support brackets on all rear axle wheel ends free of charge. the recall IS expected to begin or before july 25, 2009. owner may contact kenworth at 1-425-828-5440.
Paccar IS recalling 140 my 2005, 2007-2009 T800, W900, and T660 trucks. the caliper mounting fasteners attaching the air disc brake caliper assembly to the torque plate may have received insufficient torque during the installation process. the insufficient torque may allow the air disc brake caliper assembly to become loose and possibly separate from the…
Risk and remedy
Risk
This could result in reduced braking capacity and also a road debris hazard, increasing the risk of a crash.
Remedy
Dealers will inspect air disc brake caliper assemblies and replace the caliper mounting fasteners and torque properly. this service will be performed free of charge. the manufacturer has not yet provided an owner notification schedule. owners may contact kenworth at 1-425-828-5440.
Paccar IS recalling 130 my 2004-2009 t2000, T800, T600, W900 and T660 kenworth trucks built with an ag400 rear suspension, long stroke brake chambers, and wide base tires (super singles). these vehicles may develop an increase in lateral and vertical axle movement. this movement may cause part or parts of the brake assembly (brake cam tube support, brake…
Risk and remedy
Risk
A failure may reduce vehicle brake performance, increasing the risk of a crash.
Remedy
Dealers will install the cam tube support brackets on all of the rear axle wheel ends. inspect the rear axle brake assembly and replace it if cracked. the recall IS expected to begin during november 2008. owners may contact kenworth at 1-425-828-5440.
Paccar IS recalling 4,883 my 2006-2009 kenworth T600, T660, T800, W900, t2000 and my 2008-2009 peterbilt 365, 367, 379, 384, 386, 387, 388 and 389 trucks. inadequate stiffness of the diesel particulate filter (dpf) bracket could result in separation of the dpf from the chassis.
Risk and remedy
Risk
A vehicle crash could occur if another vehicle strikes the dpf on the roadway.
Remedy
Paccar IS working with caterpillar to repair these vehicles (please see 08e041). owners may contact caterpillar at 1-800-447-4986 or kenworth at 1-425-828-5440 or peterbilt at 1-940-591-4196.
Paccar IS recalling 86 my 2009 kenworth T660, T800, W900, and peterbilt 386, 365, and 388 trucks equipped with bendix front air disc brakes. the size 14 service chamber of certain front air disc brakes may have been contaminated with grease between the piston head/plate and the diaphragm. when braking pressure IS applied, the grease may allow the piston…
Risk and remedy
Risk
The catching of the piston head/plate on the reducing ring may lock up the corresponding front air disc brake which may impact the operator's ability to steer or control the vehicle.
Remedy
Dealers will replace both front air disc brakes size 14 service chambers free of charge. the recall began on august 27, 2008. owners may contact kenworth at 1-425-828-5440 and peterbilt at 1-940-591-4196.
Kenworth IS recalling 1,189 my 2009 t2000, T600, T660, T800 and W900 trucks. the axle u-bolts attaching the axle to the drive beam on certain ag380 rear suspensions may have received insufficient fastener torque during the installation process.
Risk and remedy
Risk
The insufficient torque may allow the axle u-bolt to loosen if undetected, could impact long term suspension performance and increase the risk of a crash.
Remedy
Dealers will have the axle u-bolt on the affected chassis re-torqued to factory specifications free of charge. the recall began on august 12, 2008. owners may contact kenworth at 425-828-5440.
Paccar IS recalling 62 my 2009 kenworth T660 trucks. the 90 degree standoff mounted on the front bumper support may come into contact with the hood strut, which may result in a non-operational hood safety latch. the safety latch prevents the hood from closing.
Risk and remedy
Risk
A non-operational safety latch may not be detected by a driver or mechanic and could increase the risk of personal injury or vehicle damage.
Remedy
Dealers will relocate the 90 degree standoff and reroute the headlight harness away from the hood strut in order to provide the clearance needed. the recall began on july 21, 2008. owners may contact kenworth at 1-425-828-5440.
Paccar IS recalling 1,043 my 2008-2009 kenworth C500, t2000,t660, T800 and W900 trucks equipped with bendix MV-3 dash control valves. the molded valve body has an incorrect core pin in the injection mold causing the valve body to be oversized in the double check valve area. this condition can allow the rubber double check valve to become lodged in the…
Risk and remedy
Risk
If the double check valve becomes lodged, in the event of a primary reservoir failure, air pressure can leak past the lodged double check valve thereby depleting the secondary reservoir, causing reduced ability for modulating the service emergency brakes. in such an event, the operator should observe an air leak, indications of low air pressure via the primary and secondary air gauges, and audible and visual low air pressure warning alarms. a vehicle crash IS possible if these warnings are not heeded.
Remedy
Dealers will replace the bendix MV-3 dash control valves free of charge. the recall began on april 14, 2008. owners may contact kenworth at 1-425-828-4196.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- Driveshaft separates from tractor
SummaryOn July 13, 2010, the Office of Defects Investigations (ODI) opened an investigation on model year (MY) 2007-2009 Peterbilt tractors equipped with the (SPL170XL extended lube inter-axle driveline).ODI opened this investigation based on one Vehicle Owners Questionnaire (VOQ) and certain Peterbilt field…
SummaryOn July 13, 2010, the Office of Defects Investigations (ODI) opened an investigation on model year (MY) 2007-2009 Peterbilt tractors equipped with the (SPL170XL extended lube inter-axle driveline).ODI opened this investigation based on one Vehicle Owners Questionnaire (VOQ) and certain Peterbilt field reports.During the course of the investigation, ODI reviewed PACCAR's IR (October 22, 2010) response with associated data related to Warranty and complaint information, mined field data, interviewed customers and visited local dealers within the Washington Metropolitan area.PACCARconducted testing regarding torsional loading and identified various causative factors contributed to this safety defect finding.The Defect is a consequence of the bearing surfaces of the SPL170XL extended lube universal joint that attaches the inter-axle driveline to the drive axle becoming prematurely worn due to a breakdown of lubrication and/or excessive heat.Prematurely worn bearing surfaces may result in the u-joint becoming loose and/or binding.This condition may result in universal joint failure, allowing the inter-axle driveline to detach from the axle, which may cause the drive shaft to separate from the vehicle, increasing the risk of personal injury or property damage hazard.ODI learned that the affected population of the alleged defect extended to peer models within PACCAR.In summary, the following vehicles are being recalled: MY 2007 and 2008 Kenworth trucks, models T600, T660, T2000, T800 and W900 and MY 2007/2008 Peterbilt trucks, models357, 378, 379, 385, 386, 387, 388, and 389 allequipped with extended lube inter-axle drivelines manufactured by Dana Corporation.The recall affects vehicles manufactured between February 2, 2006 and April 30, 2007.At this time PACCAR has not yet identified a fix for the inner-axle safety defect and is currently conducting testing with the intent to provide a solution to the failure.ODI will monitor the development of PACCARS testing and ensure a timely repair for the consumer.This investigation is closed.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 10254164Certain 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.
- 10188550Information Only Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
- 10177021Information 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.
- 10173212Information 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.
- 10173205Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
- 10168703Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
- 10045240Kenworth: oil collection at cac intake pipe IS caused by an imbalance in turbocharger pressures. Models T660, T800, T700, and W900.
- 10045239Kenworth: regarding update information for engine brake and throttle pedal position return range, which was too narrow to engage and engine brake was not engaging.
- 10044799Kenworth: see document search button for owner letter. Line fatigue failure may be due to excessive vibrations of high pressure fuel lines and diesel fuel leak and malfunction indicator lamp.
- 10043743Kenworth: engine control unit (ecu), identified as pmci in engine rapido, should have a protective shield for software updates and the hc doser fitting installed for after aftertreatment control unit.
- 10043721Kenworth: see document search button for owner letter. The original style oil filter cap system IS being replaced by an improved oil filter cap lock system.
- 10043166Kenworth: see document search button for owner letter. Bulletin refers to the dual exhaust rear nox sensor moisture protection campaign. To divert moisture from the rear (scr outlet) nox sensor there IS a new design for exhaust element.
- 10042784Kenworth: information regarding rear nox sensor repairs should include system updates for chassis operating in conditions which result in moisture related sensor failures with improved moisture protection exhaust design for rear nox sensor.
- 10042755Kenworth: for certain trucks, the engine control unit (ecu), identified as pmci in engine rapido, and aftertreatment control unit will benefit from software updates.
- 10041350Kenworth: power steering pump spool valve does not meet quality standards. There may be a lack of steering assist or hard steering at idle.
- 10041346Paccar: water may seep between the wire insulation and potting of the fuel sensor. There may be an erratic false warning of water in fuel.
- 10040384Paccar service campaign: see document search button for owner letter. There have been updates to the engine software.
- 10040366Kenworth service campaign: see document search button for owner letter. The odometer may inaccurately record mileage. The fog lamp circuit may not work with the inside switch. Some chassis have inaccurate chassis weight on the door label.
- 10040181Paccar: engineering standards have changed and there are now engines with heat treated bolts.
- 10040180Paccar: a software update IS causing the check engine light to come on.
- 10040178Paccar: a coolant sieve must be removed at the first engine oil change.
- 10040167Paccar: information on premature fan clutch lining wear.
- 10040166Paccar: information on fan hub bearings inspection and warranty extension due to a higher than normal failure rate.
- 10040165Paccar: there are cooling modules that may have a loose connection at the charge air cooler mounting.
- 10040039Paccar inc: programming campaign to allow proper warning time before fuel tank IS empty.
- 10040038Paccar inc: fuel sensor indicating less than full when the tank IS full.
- 10039248Paccar service campaign: see document search button for owner letter. Some kenworth vehicles are missing an emissions compliance label.
- 10038191Paccar: the chassis needs to have production parts installed and pre-production parts removed.
- 10035125Kenworth (paccar): campaign to inspect for missing exhaust gaskets. Chassis listed may have been manufactured without an upper exhaust pipe gasket. Equipped with paccar MX engines only.
- 10033585Caterpillar C15 or cummins isx engines experiencing premature failure of the fan hub bearings.
- 10032664Kenworth trucks: headlight moisture repairs. Beads of moisture or pooling water visible through the headlight lenses. Inspect for missing headlight vent and/or rock shield and repair as necessary.
- 10032589Kenworth truck service campaign: see document search button for owner letter. The oil slinger threads on input shafts of identified 10 speed transmission were machined incorrectly. This defect will create a slow fluid leak at the input shaft to transmission interface. Csc letter was rec'd.
- 10032566Kenworth truck service campaign: see document search button for owner letter. Transmission driver instructions manual campaign. The wrong eaton transmission driver instructions manual may have been delivered with identified chassis.
- 10031084Kenworth: center fairing rattling loose causing damage to fairing support tubes. Any t660s equipped with full chassis fairings. No model years listed.
- 10026047Kenworth: clean power system high voltage repair. High voltage warning light on the voltmeter. T660s built and equipped with the kenworth clean power system since 05/25/07. Updated 9/29/09.
Every Kenworth T660 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.