2010 Kenworth T660
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Kenworth › T660 › 2010
These records cover every 2010 Kenworth T660. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
10 recalls name the 2010 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 certain model year 2010 t2000, T660, T800 and W900 vehicles manufactured between july 30, 2009 and september 18, 2009. the rear axle outer end hub may have not been primed with oil properly during the rear axle installation process. potential lack of oil may cause the outer end bearing to heat up and/or seize, possibly resulting in…
Risk and remedy
Risk
A wheel end fire may occur, increasing the risk of a crash.
Remedy
Dealers will replace the bearings, seals and will add oil to the outer end hub as well as inspect races and axle housing for damage and replacing as necessary free of charge. the safety recall began on may 24, 2010. owners may contact kenworth at 425-828-5440.
Kenworth IS recalling model year 2010 t2000, T800, T660 and w900s trucks manufactured between july 1 and october 23, 2009. the fasteners attaching the steering gear to the front drive bracket may have received insufficient torque during the installation process resulting in less than required clamp load.
Risk and remedy
Risk
The insufficient clamp load may allow the fastener(s) to become loose and fall away from the vehicle resulting in road debris. if multiple fasteners were to become loose, the vehicle steering may wander, which could result in a crash.
Remedy
Dealers will inspect and re-torque the steering gear mounting bolts free of charge. the safety recall IS expected to begin during january 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.
Owner complaints
2 complaints1 involved a crash1 injuries
What owners report most
Latest complaints
- Steering
While going down long mountain grades, in hot weather, the steering locks up. I was told that it needed a oil cooler. I paid $1280.00 for an oil cooler. Trw does not think they have any responsibility to warranty a one year old steering gear. Even though they know that it IS a malfunctioning relief valve. *tr
- Service brakes, hydraulic
TL* the contact owns a 2010 kenworth T660 truck. While driving approximately 10 mph, the contact attempted to depress the brake pedal when he noticed that the vehicle was hesitant to stop. The contact was able to pull the emergency brake in order to slow the vehicle speed but the contact crashed…
TL* the contact owns a 2010 kenworth T660 truck. While driving approximately 10 mph, the contact attempted to depress the brake pedal when he noticed that the vehicle was hesitant to stop. The contact was able to pull the emergency brake in order to slow the vehicle speed but the contact crashed into the vehicle positioned in front of him. The contact noticed there was a cover over the steering column which interfered when he attempting to brake. The contact stated that the brake pedal was extremely narrow and made it difficult to engage. A police report was filed. The contact was not injured but the driver of the second vehicle stated she recently had surgery on her shoulder and was worried about further injuries. The manufacturer was made aware of the failure and stated that an inspector would inspect the vehicle for failure. The vehicle was not repaired. The approximate failure mileage was 145,000. updated 06/24/11 *bf the consumer marked the injury box. Updated 11/16/11
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.
- 10051834MX rc5-rc14 software update campaign. Software updates are said to benefit the engines in RC5 and RC14 kenworth engines. Paccar/kenworth.
- 10048500Kenworth: see document search button for owner letter. Transmission does not automatically upshift when high idle speed of engine IS exceeded due to lack of proper calibration of transmission for-engine. Models 2010-2012 T660, T700 and T800.
- 10048419Kenworth: see document search button for owner letter. Specific product improvement elements are described in bulletin for chassis benefiting from engine software updates. Models 2010-2012 T660, T700, T800, W900.
- 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.
- 10044285Kenworth (paccar): engine software update required for installation of hc doser shields and/or egr cleaning for chassis.
- 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.
- 10043723Kenworth: information for aftertreatment, pmci or related issues, caused by corrosion for water in fuel (wif) sensor, at engine harness J175 connector.
- 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.
- 10042806Kenworth: information in bulletin pertaining to possible engine derate by which the def filters are clogged and/or contaminated def IS identified.
- 10042805Kenworth: information pertaining to updating the engine on certain trucks for new productive engines. Emissions label with required clarification.
- 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.
- 10042756Kenworth: certain model trucks will have an incomplete deaeration when radiator IS drained and then refilled due to an improper coolant line routing.
- 10042755Kenworth: for certain trucks, the engine control unit (ecu), identified as pmci in engine rapido, and aftertreatment control unit will benefit from software updates.
- 10042728Kenworth truck: on certain trucks, the correct emissions compliance label for the paccar MX engine IS mission on the identified chassis.
- 10041352Paccar: software update information.
- 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.
- 10040511Paccar: vehicles were built with missing rear axle camshaft braces.
- 10040386Paccar service campaign: see document search button for owner letter. There may have been improper torque to the engine coolant filter which could lead to leaking and engine overheating.
- 10040385Paccar: fuel line routing procedure.
- 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.
- 10040301Paccar: the turbocharger support bracket has been updated.
- 10040300Paccar: fuel injection line replacement information.
- 10040244Paccar: there may be false torque readings and a potential for loosening and/or leaks of the doser supply line swivel nut. This IS due to it not being lubricate prior to assembly.
- 10040188Paccar: the transmission and clutch moutning bolts are defective and may crack. There may be noise, vibration, or difficulty shifting.
- 10040184Paccar: software updates have resulted in check engine lights coming on.
- 10040183Paccar: current oil modules on the engines have product improvements.
- 10040182Paccar: there are product improvements to the temperature sensors.
- 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.
Every Kenworth T660 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.