NHTSA vehicle safety data
2014 Kenworth T660 Recalls & Complaints
The 2014 Kenworth T660 has 11 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 2014 Kenworth T660. Recall data is refreshed daily from NHTSA.
2014 Kenworth T660 owner complaints
Owners have filed 1 complaint with NHTSA about the 2014 Kenworth T660, describing incidents dated November 23, 2021.
Most-cited components
- Electronic Stability Control (ESC) 1 complaint
- Service Brakes 1 complaint
Newest complaints
ODI #11441510 · Filed
The contact owns a 2014 Kenworth T660. The contact received a recall notification for NHTSA Campaign Number: 20V199000 (Electronic Stability Control, Service Brakes, Air). The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was…
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.
Driveshaft may Slip
NHTSA #15V310000 · Power Train — Driveline — Driveshaft · NHTSA notice
Reported May 26, 2015 · PACCAR Incorporated
Potentially affected: 30 vehicles
Repair completion: 50% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 15KWJ and 515-H · Owners notified July 15, 2015 · Vehicles built January 29, 2013 – April 2, 2014 (per NHTSA)
Defect description
PACCAR Incorporated (PACCAR) is recalling certain model year 2014 and 2015 Kenworth T660, T680, and T800 trucks manufactured January 29, 2013, to April 2, 2014, and 2013 Peterbilt 587 trucks manufactured on August 8, 2012. The affected trucks are built with a driveshaft that may not transmit power to the wheels due to weld failure from corrosion.
Safety consequence
If the weld fails causing a loss of power to the rear wheels, the vehicle operator may be unable to move the vehicle, or may experience deceleration if the vehicle is in motion, increasing the risk of a vehicle crash.
Manufacturer remedy
PACCAR will notify owners, and dealers will replace the defective driveshafts, free of charge. The recall began on July 15, 2015. Owners may contact Kenworth customer service at 1-425-828-5000, or Peterbilt customer service at 1-940-591-4000. PACCAR's number for this recall is 15KWJ and 515-H.
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.
Alternator Charge Cable may Chafe
NHTSA #15V270000 · Electrical System — Alternator/Generator/Regulator · NHTSA notice
Reported May 8, 2015 · PACCAR Incorporated
Potentially affected: 1,494 vehicles
Repair completion: 76.17% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 15KWE and 515-F · Owners notified September 16, 2015 · Vehicles built February 18, 2013 – April 10, 2015 (per NHTSA)
Defect description
PACCAR Incorporated (PACCAR) is recalling certain model year 2014-2016 Kenworth T660, T680, T880 trucks manufactured February 18, 2013, to April 10, 2015, and 2011-2016 Peterbilt 386, 389, 567, 579, and 587 trucks manufactured December 13, 2010, to April 20, 2015. The affected trucks, equipped with PACCAR MX-13 engines and Delco-Remy 40SI alternators, have alternator charge cables that may chafe against a formed metal freon discharge line.
Safety consequence
If the alternator cable rubs through its insulation, an electrical short may occur, increasing the risk of a fire.
Manufacturer remedy
PACCAR will notify owners, and dealers will reroute the alternator charge cable away from the metal freon line, free of charge. PACCAR issued an interim notification to owners on July 10, 2015. The recall began on September 16, 2015. Owners may contact Kenworth customer service at 1-425-828-5000 or Peterbilt customer service at 1-940-591-4000. PACCAR's numbers for this recall are 15KWE and 515-F.
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.
Ice May Form in Intake Manifold
NHTSA #14V086000 · Engine and Engine Cooling — Engine · NHTSA notice
Reported February 18, 2014 · PACCAR Incorporated
Potentially affected: 2,019 vehicles
Manufacturer campaign 14KWG/214-C · Owners notified April 12, 2014 · Vehicles built January 23, 2013 – February 4, 2014 (per NHTSA)
Defect description
PACCAR Inc, is recalling certain model year 2014-2015 Kenworth T440, T660, T800, and W900 tractor trailers manufactured January 23, 2013, through February 4, 2014, and certain model year 2014-2015 Peterbilt 320, 365, 382, 384 tractor trailers manufactured January 21, 2013, through February 5, 2014, and equipped with certain Cummins Westport Model ISL G and ISX12 G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper operation of the intake manifold pressure sensor.
Safety consequence
The improper operation of the sensor could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.
Manufacturer remedy
PACCAR will notify owners, and authorized Cummins service facilities will upload a new ECM calibration, free of charge. The recall began on April 12, 2014. Customers may contact PACCAR at 1-425-468-7400. Paccar's recall numbers associated with this campaign are 14KWG (Kenworth), and 214-C (Peterbilt).
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.
Parking Brake Installed on Incorrect Axle
NHTSA #14V027000 · Parking Brake · NHTSA notice
Reported January 29, 2014 · PACCAR Incorporated
Potentially affected: 86 vehicles
Repair completion: 10.47% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 14KWE · Owners notified April 9, 2014 · Vehicles built December 4, 2012 – September 17, 2013 (per NHTSA)
Defect description
PACCAR Incorporated (PACCAR)is recalling certain model year 2013-2014 T660, and T680 vehicles manufactured from December 4, 2012, through September 17, 2013 and configured as a dead axle tandem with air disc brakes and spring brake delete options. The affected vehicles have the parking brake incorrectly placed on the non-driven rear axle.
Safety consequence
If the parking brake is on the non-driven axle the vehicle could roll away when the parking brakes are set, resulting in an increased risk of a crash.
Manufacturer remedy
PACCAR will notify owners, and dealers will move the parking brake components to the forward wheel axle, free of charge. The recall began on April 9, 2014. Owners may contact PACCAR at 1-425-468-7400. Paccar's number for this recall is 14KWE.
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.
Seat Belt may be Difficult to Unlatch/FMVSS 209
NHTSA #14V013000 · Seat Belts · NHTSA notice
Reported January 24, 2014 · PACCAR Incorporated
Potentially affected: 10,414 vehicles
Repair completion: 58.86% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 14KWC/PB114-B · Owners notified March 31, 2014 · Vehicles built August 7, 2013 – October 31, 2013 (per NHTSA)
Defect description
PACCAR Incorporated (PACCAR) is recalling certain model year 2014 Kenworth T660, T680, T700,T800, T880, W900, T440, T470, T370, T270, T170, C500, and C550 chassis manufactured between August 7, 2013, and October 31, 2013, and Peterbilt 320, 325, 330, 337, 348, 365, 367, 382, 384, 386, 388, 389, and 587 chassis manufactured between August 7, 2013, and November 3, 2013, and equipped with IMMI-brand L9 seat belt buckles. When the button is pressed to release the seat belt, the latch plate can become partially engaged with the buckle, making the seat belt difficult to unlatch. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 209, "Seat Belt Assemblies."
Safety consequence
If the latch plate remains partially engaged after the button is pressed, egress from the vehicle could be hindered which would increase the risk of injury in the event of an emergency.
Manufacturer remedy
PACCAR will notify owners, and dealers will inspect and replace the seat belt buckles, as necessary, free of charge. The recall began on March 31, 2014. Owners may contact PACCAR at 1-425-468-7400. Kenworth's number for this campaign is 14KWC. Peterbilt's number for this campaign is 114-B.
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.
Stop/Tail/Turn Lamp Housing/FMVSS 108
NHTSA #13V612000 · Exterior Lighting — Tail Lights · NHTSA notice
Reported December 5, 2013 · PACCAR Incorporated
Potentially affected: 5,087 vehicles
Repair completion: 76.45% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 13KWN · Owners notified February 4, 2014 · Vehicles built July 1, 2013 – September 17, 2013 (per NHTSA)
Defect description
PACCAR Incorporated (Paccar) is recalling certain model year 2014 Kenworth T170, T270, T370, T440, T470, T660, T680, T700, T800, T880, C500 and W900 trucks manufactured July 1, 2013 through September 17, 2013. In the affected vehicles, the plastic housing of the Stop/Tail/Turn (STT) lamp can shrink and allow the light bulb to fall out of the mounted retention ring. As such, the Stop/Tail/Turn light would not be illuminated, and the vehicles do not conform to Federal Motor Vehicle Safety Standard (FMVSS) No. 108 "Lamps, Reflective Devices, and Associated Equipment."
Safety consequence
If the stop/tail/turn light is not illuminated, the driver's intentions would not be communicated, which increases the risk of a crash.
Manufacturer remedy
Kenworth will notify owners, and dealers will replace the defective STT lamps with new lamps. The recall began on February 4, 2014. Customers may contact Paccar at 1-425-468-7400. Kenworth's number for this recall is 13KWM.
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.
Ignition Switch may cause Unintended Engine Start
NHTSA #13V222000 · Electrical System — Ignition — Switch · NHTSA notice
Reported May 28, 2013 · PACCAR Incorporated
Potentially affected: 1,773 vehicles
Manufacturer campaign 13KWF, 0513-E · Owners notified June 14, 2013 · Vehicles built May 6, 2013 – May 17, 2013 (per NHTSA)
Defect description
PACCAR is recalling certain model year 2014 Kenworth T170, T270, T370, T470, T660, T680, T800, T880, and W900 trucks manufactured May 6, 2013, through May 17, 2013; and model year 2014 Peterbilt 330, 337, 348, 365, 367, 382, 384, 386, 388, 389, 389K, 567, 579 and 587 trucks manufactured May 1, 2013 through May 17, 2013. An internal defect in the ignition switch causes the starter to engage when a key is partially inserted, before the key is turned.
Safety consequence
Unintended engine startup could cause injury to a person working in the engine compartment. Vehicles with standard transmissions may experience unexpected movement, which may result in personal injury or a crash.
Manufacturer remedy
PACCAR will notify owners, and dealers will replace affected ignition switches, free of charge. The recall began on June 14, 2013. Owners may contact Kenworth at 1-425-828-5000 or Peterbilt at 1-940-591-4000. Kenworth's recall campaign number is 13KWF. Peterbilt's recall campaign number is 0513-E.
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.
Other Kenworth T660 model years
Check your 2014 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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