NHTSA vehicle safety data
2012 Kenworth T660 Recalls & Complaints
The 2012 Kenworth T660 has 9 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Kenworth dealer.
NHTSA recall and complaint data for the 2012 Kenworth T660. Recall data is refreshed daily from NHTSA.
2012 Kenworth T660 owner complaints
Owners have filed 1 complaint with NHTSA about the 2012 Kenworth T660, describing incidents dated January 18, 2013.
Most-cited components
- Engine 1 complaint
Newest complaints
ODI #10583777 · Filed
CUMMINS ENGINE HAS NOT COME FORWARD AND ANNOUNCE ON THEIR IS 15 LITERS THAT THERE ARE HAVING RINGS AND SLEEVES ISSUES. WHICH CAUSE THE ENGINE TO BURN OIL FAILING OUR DIESEL PARTICULAR FILTER WHICH COULD CAUSE A FIRE. THE EXIST DUE A DESIGNEE FAULT IN THE PISTONS OF THE ENGINES. RINGS ARE PACKING…
Insufficient Air Volume in Brake System /FMVSS 121
NHTSA #24V145000 · Service Brakes, Air — Supply — Reservoir/Tank · NHTSA notice
Reported February 23, 2024 · PACCAR Incorporated
Potentially affected: 936 vehicles
Repair completion: 24.04% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 24KWD · Owners notified August 12, 2024
Defect description
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 for the brake system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Safety consequence
Insufficient air volume can reduce braking performance and increase the risk of a crash.
Manufacturer 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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Driver not Warned when ABS Offline/FMVSS 121, 136
NHTSA #20V199000 · Electronic Stability Control (ESC) · NHTSA notice
Reported April 6, 2020 · PACCAR Incorporated
Potentially affected: 460,515 vehicles
Repair completion: 33.98% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 20pbc AND 20KWB · Owners notified May 26, 2020
Defect description
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 to the controller, the dash warning light for the ABS may not illuminate to warn the driver of the loss of ABS. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles."
Safety consequence
If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
Manufacturer 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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
DRLs Override Hazard Lights/FMVSS 108
NHTSA #15V458000 · Exterior Lighting — Hazard Flashing Warning Lights · NHTSA notice
Reported July 22, 2015 · PACCAR Incorporated
Potentially affected: 12,551 vehicles
Repair completion: 78.27% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 15KWL · Owners notified September 16, 2015 · Vehicles built January 14, 2010 – May 22, 2015 (per NHTSA)
Defect description
PACCAR Incorporated (PACCAR) is recalling certain model year 2011-2016 Kenworth T440, T470, T660, T680, and T880 trucks manufactured January 14, 2010, to May 22, 2015, and equipped with HID Headlamps and the option for Daytime Running Lamps (DRL). The DRLs are required to deactivate when the hazard warning lights are activated, however, the DRLs on these vehicles override the hazard flashing functionality after the brake pedal is pushed for more than two seconds. Normal hazard flashing functionality returns once the service brake is released. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, "Lamps, Reflective Devices, and Associated Equipment."
Safety consequence
If the hazard warning lamps are overridden by the DRL, oncoming vehicles may fail to be warned, increasing the risk of a crash.
Manufacturer remedy
Kenworth will notify owners, and dealers will update the cab controller software, free of charge. The recall began on September 167, 2015. Owners may contact Kenworth customer service at 1-425-828-5000. Kenworth's number for this recall is 15KWL.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Water may Leak into Wiper Motor
NHTSA #15V271000 · Visibility — Windshield Wiper/Washer — Motor · NHTSA notice
Reported May 8, 2015 · PACCAR Incorporated
Potentially affected: 104,807 vehicles
Repair completion: 60.33% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 15KWF · Owners notified September 2, 2015 · Vehicles built November 1, 2010 – April 7, 2015 (per NHTSA)
Defect description
PACCAR Incorporated (PACCAR) is recalling certain model year 2011-2016 Kenworth T270, T370, T440, T470, C500, C540, C550, T660, T800, W900, and 963 trucks manufactured November 1, 2010, to April 6, 2015. In the affected trucks, water may leak into the wiper motor.
Safety consequence
As water leaks in, the wiper may cease to function on the 'intermittent' setting, reducing the driver's visibility and increasing the risk of a crash. Additionally, the water may cause corrosion which, over time, may result in an electrical short, increasing the risk of a fire.
Manufacturer remedy
PACCAR is still developing and testing a remedy. The recall is expected to begin in July 2015. An interim letter was sent to owners on July 2, 2015. The recall began on September 2, 1015. Owners may contact Kenworth customer service at 1-425-828-5000. PACCAR's number for this recall is 15KWF.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
SERVICE BRAKES/ANTILOCK TRACTION RELAY VALVE
NHTSA #12V026000 · Service Brakes, Air — Supply — Check Valve · NHTSA notice
Reported January 30, 2012 · PACCAR INCORPORATED
Potentially affected: 15,932 vehicles
Manufacturer campaign 12KWA/0112-A · Owners notified February 10, 2012 · Vehicles built January 31, 2011 – January 19, 2012 (per NHTSA)
Defect description
PACCAR IS RECALLING CERTAIN MODEL YEAR 2012-2013 KENWORTH T170, T270, T370, T440, T470, T660, T700, T800, W900, AND PETERBILT 320, 330, 337, 348, 365, 367, 382, 384, 386, 388, 389, AND 587 VEHICLES, MANUFACTURED FROM JANUARY 31, 2011, THROUGH JANUARY 19, 2012, AND EQUIPPED WITH BENDIX ATR-6 ANTILOCK TRACTION RELAY VALVES. IN EXTREMELY COLD CONDITIONS, THESE BENDIX RELAY VALVES MAY POTENTIALLY DEVELOP INTERNAL LEAKAGE. INTERNAL LEAKAGE CAN LEAD TO AIR PRESSURE BEING DELIVERED TO AFFECTED PRIMARY OR SECONDARY BRAKE CAUSING CONTINUOUS BRAKE APPLICATION.
Safety consequence
UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE BRAKES TO OVERHEAT AND LEAD TO A FIRE. UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE DRIVER TO LOSE CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH. ALSO, THE BRAKES MAY BE APPLIED WITHOUT ILLUMINATING THE BRAKE LIGHTS, FAILING TO GIVE PROPER WARNING TO OTHER DRIVERS.
Manufacturer remedy
PACCAR WILL NOTIFY OWNERS, AND PROVIDE A TEMPORARY REPAIR UNTIL BENDIX DEVELOPS A PERMANENT REMEDY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON FEBRUARY 10, 2012. OWNER MAY CONTACT KENWORTH AT 1-425-828-5440 AND PETERBILT AT 1-940-591-4196.
Notes
KENWORTH AND PETERBILT RECALL NUMBERS 12KWA/0112-A.CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.
KENWORTH/PETERBILT/FAST IDLE CONTROL
NHTSA #11V380000 · Electrical System — Software · NHTSA notice
Reported July 21, 2011 · PACCAR INCORPORATED
Potentially affected: 211 vehicles
Manufacturer campaign E038R · Owners notified August 22, 2011 · Vehicles built April 19, 2010 – May 13, 2011 (per NHTSA)
Defect description
PACCAR IS RECALLING CERTAIN MODEL YEAR 2011-2012 KENWORTH T660, T700, AND T800 VEHICLES MANUFACTURED FROM APRIL 19, 2010, THROUGH MAY 13, 2011, AND MODEL YEAR 2008, 2010, AND 2011 PETERBILT 365, 367, 384, 386, 387, 388 AND 587 VEHICLES MANUFACTURED FROM APRIL 20, 2010, THROUGH JUNE 11, 2011, AND EQUIPPED WITH PACCAR MX ENGINES AND EATON ULTRASHIFT DM OR ALLISON AUTOMATIC TRANSMISSIONS (WITHOUT AUTO-NEUTRAL). THE FAST IDLE CONTROL MAY BE ACTIVATED BY THE OPERATOR WHILE THE TRANSMISSION IS IN GEAR.
Safety consequence
IF THE FAST IDLE CONTROL FUNCTION IS ENGAGED WITH THE TRANSMISSION IN GEAR, THE VEHICLE COULD UNEXPECTEDLY ACCELERATE AND OVERRIDE THE PARKING BRAKE AND , CREATING A RISK OF A CRASH AND DAMAGE TO OTHER VEHICLES OR PROPERTY AND THE POTENTIAL FOR INJURY TO NEARBY PEDESTRIANS.
Manufacturer remedy
KENWORTH AND PETERBILT DEALERS WILL UPDATE THE ENGINE SOFTWARE FOR THE AFFECTED CHASSIS. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 22, 2011. OWNERS MAY CONTACT KENWORTH AT 1-425-828-5440 AND PETERBILT AT 1-940-591-4196.
Notes
KENWORTH AND PETERBILT SAFETY RECALL NO. E038R.OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A> .
KENWORTH/SAFETY LATCH
NHTSA #11V334000 · Latches/Locks/Linkages — Hood — Latch · NHTSA notice
Reported June 24, 2011 · PACCAR INCORPORATED
Potentially affected: 72 vehicles
Manufacturer campaign 11KWD · Owners notified July 19, 2011 · Vehicles built April 18, 2011 – May 20, 2011 (per NHTSA)
Defect description
PACCAR IS RECALLING CERTAIN MODEL YEAR 2012 KENWORTH T660 TRACTORS MANUFACTURED BETWEEN APRIL 18, 2011, AND MAY 20, 2011, EQUIPPED WITH A SAFETY LATCH ATTACHED TO THE HOOD STRUT WHICH IS DESIGNED TO AUTOMATICALLY ENGAGE WHEN THE HOOD IS OPENED. IF THE HOOD STRUT WERE TO SEPARATE, THE SAFETY LATCH MAY NOT ENGAGE.
Safety consequence
A NON-OPERATIONAL SAFETY LATCH MAY NOT BE DETECTED BY AN OPERATOR AND THE HOOD MAY UNEXPECTEDLY CLOSE, INCREASING THE RISK OF PERSONAL INJURY.
Manufacturer remedy
KENWORTH DEALERS WILL INSPECT THE HOOD STRUT FOR THE SPECIFIC DEFECTIVE LOT CODE AND IF THE STRUT IS WITHIN THE LOT CODE, THE STRUT WILL BE REPLACED. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JULY 19, 2011. OWNERS MAY CONTACT PACCAR AT 1-425-468-7400.
Notes
KENWORTH SAFETY RECALL NO. 11KWD.OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A> .
KENWORTH/GUNITE/SLACK ADJUSTER CAST HOUSING
NHTSA #11V157000 · Service Brakes, Air — Slack Adjusters · NHTSA notice
Reported March 7, 2011 · PACCAR INCORPORATED
Potentially affected: 280 vehicles
Manufacturer campaign 11KWA · Owners notified March 30, 2011 · Vehicles built October 18, 2010 – January 28, 2011 (per NHTSA)
Defect description
PACCAR IS RECALLING CERTAIN MODEL YEAR 2011-2012 KENWORTH T270/370, T440/T470, T800, T660, W900 AND C500 VEHICLES MANUFACTURED BETWEEN OCTOBER 18, 2010, AND JANUARY 28, 2011. CERTAIN CAST IRON SLACK ADJUSTER HOUSINGS, WHICH TRANSMIT BRAKING FORCE FROM THE BRAKE CHAMBER PUSH ROD TO THE BRAKE CAM TUBE, MAY INCLUDE A FLOW NOTCH IN THE HANDLE PORTION OF THE HOUSING DUE TO AN ERROR DURING THE CASTING PROCESS. A FLOW NOTCH IN THE HANDLE PORTION MAY REDUCE THE EFFECTIVE CROSS SECTION STRUCTURE AND CAUSE THE SLACK ADJUSTER HOUSING TO FRACTURE.
Safety consequence
IF THE SLACK ADJUSTER HOUSING WERE TO FRACTURE, THE WHEEL BRAKE TO WHICH THE SLACK ADJUSTER HOUSING IS ATTACHED WOULD NO LONGER FUNCTION, WHICH COULD INCREASE VEHICLE STOPPING DISTANCES, AND IF MOUNTED ON THE STEER AXLE, COULD CAUSE THE VEHICLE TO PULL TO ONE SIDE DURING BRAKING, INCREASING THE RISK OF A CRASH.
Manufacturer remedy
DEALERS WILL INSPECT AND REPLACE THE SLACK ADJUSTER HOUSING AS NECESSARY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 30, 2011. OWNERS MAY CONTACT KENWORTH AT 425-828-5440.
Notes
KENWORTH SAFETY RECALL. NO.11KWA.OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A> .
KENWORTH/PETERBILT/CENTRIFUGAL SPINNER CAP
NHTSA #11V127000 · Fuel System, Other — Storage — Tank Assembly · NHTSA notice
Reported February 23, 2011 · PACCAR INCORPORATED
Potentially affected: 4,664 vehicles
Manufacturer campaign E026R · Owners notified March 4, 2011 · Vehicles built February 19, 2007 – February 23, 2011 (per NHTSA)
Defect description
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 TO PARTIALLY DISCHARGE FROM THE OIL MODULE ONTO EXHAUST COMPONENTS.
Safety consequence
THE DISCHARGE OF ENGINE OIL ONTO EXHAUST COMPONENTS WHICH ARE HOT, SUCH AS WHEN THE ENGINE IS UNDER SIGNIFICANT LOAD, MAY CAUSE A FIRE.
Manufacturer 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.
Notes
OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A> .
Other Kenworth T660 model years
Check your 2012 Kenworth T660 VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Kenworth T660 at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
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