No complaints are listed for the 2015 Kenworth T660. NHTSA's API and bulk file list none in this build.
Data build 2026-10-09.
NHTSA lists this vehicle as KENWORTH T660.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
11 recalls. Showing the latest 10 of 11.
Date: 2024-02-23. Systems: SERVICE BRAKES, AIR.
Defect: 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 vehi (excerpt)
Consequence: Insufficient air volume can reduce braking performance and increase the risk of a crash. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2020-04-06. Systems: ELECTRONIC STABILITY CONTROL (ESC), SERVICE BRAKES, AIR.
Defect: 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 (excerpt)
Consequence: If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2018-06-01. Systems: ELECTRONIC STABILITY CONTROL (ESC), SERVICE BRAKES, AIR.
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2017-2018 Peterbilt 567 and 579 trucks and 2015-2018 Kenworth T660, T680, T800, T880 and W900 trucks. 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 (excerpt)
Consequence: If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash. (excerpt)
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 July 30, 2018. Owners may contact Peterbilt customer service at 1-918-259-3258 or Kenworth customer service at 1-425-828-5000. (excerpt)
Do not drive: No. Park outside: No.
Date: 2015-07-22. Systems: EXTERIOR LIGHTING.
Defect: 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 func (excerpt)
Consequence: If the hazard warning lamps are overridden by the DRL, oncoming vehicles may fail to be warned, increasing the risk of a crash. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2015-05-26. Systems: POWER TRAIN.
Defect: 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.
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.
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.
Do not drive: No. Park outside: No.
Date: 2015-05-08. Systems: VISIBILITY.
Defect: 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.
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.
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.
Do not drive: No. Park outside: No.
Date: 2015-05-08. Systems: ELECTRICAL SYSTEM.
Defect: 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 (excerpt)
Consequence: If the alternator cable rubs through its insulation, an electrical short may occur, increasing the risk of a fire. (excerpt)
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- (excerpt)
Do not drive: No. Park outside: No.
Date: 2015-01-30. Systems: SERVICE BRAKES, AIR.
Defect: PACCAR Incorporated (PACCAR) is recalling certain model year 2015 Peterbilt 210, 220, 320, and Kenworth K270, K370, T660, T800, T880 trucks manufactured July 21, 2014, to September 16, 2014. The brake caliper bolts may not be properly torqued.
Consequence: As a result, the brake caliper bolts may loosen, reducing the effectiveness of the brakes and increasing the risk of a crash.
Remedy: PACCAR will notify owners, and dealers will inspect, and tighten or replace any loose caliper bolts, as necessary, free of charge. The recall began on March 27, 2015. Owners may contact Peterbilt customer service 1-940-591-4000, or Kenworth customer service at 1-425-828-5000. PACCAR's number for this recall is 15KWA (Kenworth) and 115B (Peterbilt).
Do not drive: No. Park outside: No.
Date: 2014-12-29. Systems: PARKING BRAKE.
Defect: PACCAR Incorporated (PACCAR) is recalling certain model year 2015 Peterbilt 367, 389, 567, 579, and 587 trucks manufactured from May 23, 2014, to February 13, 2015, and 2015 Kenworth T270, T370, T440, T470, T660, T680, T800, T880, and W900 trucks manufactured from May 23, 2014, to February 13, 2015, equipped with certain air brake actuators. The affected vehicles may experience brake drag due to (excerpt)
Consequence: Brake drag may result in a wheel end fire. (excerpt)
Remedy: Kenworth and Peterbilt will notify owners, and dealers will inspect and replace the brake chamber, as necessary, free of charge. An interim notice was mailed to owners March 3, 2015. The recall began on May 14, 2015. Owners may contact PACCAR customer service at 1-425-828-5000 (Kenworth), or 1-940-591-4000 (Peterbilt). PACCAR's number for this recall is 14KWP (Kenworth), and 1214L (Peterbilt). (excerpt)
Do not drive: No. Park outside: No.
Date: 2014-11-10. Systems: ELECTRICAL SYSTEM.
Defect: PACCAR Incorporated (PACCAR) is recalling certain model year 2015 Kenworth T660, T800, W900, T400, and C500 heavy trucks manufactured September 19, 2014, to October 30, 2014. The affected vehicles may have been produced with an undersized wire gauge for the trailer stop lamp circuit in the instrument panel harness.
Consequence: If the smaller wire gauge may overheat increasing the risk of a vehicle fire.
Remedy: PACCAR will notify owners, and dealers will replace the defective wire with a properly sized wire, free of charge. The recall began on December 19, 2014. Owners may contact PACCAR customer service at 1-425-828-5000 (Kenworth).
Do not drive: No. Park outside: No.
Manufacturer communications
22 manufacturer communications.
Communications by system| System | Count |
|---|
| ELECTRICAL SYSTEM | 7 |
|---|
| ENGINE AND ENGINE COOLING | 4 |
|---|
| EQUIPMENT | 4 |
|---|
| ENGINE | 3 |
|---|
| EQUIPMENT ADAPTIVE/MOBILITY | 3 |
|---|
| POWER TRAIN | 2 |
|---|
| WHEELS | 2 |
|---|
| SERVICE BRAKES | 1 |
|---|
11037541
Date: 2026-09-11. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 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."
10254164
Date: 2024-04-09. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, AIR.
Certain 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 A A?A A A A Air Brake SystemsA A?A A A A . This bulletin will be updated when repair parts and procedures are available.
10218895
Date: 2022-08-03. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
10199944
Date: 2021-07-20. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
Emissions Recall - PACCAR MX-13 Engine Model Year 2015B engines require a software update to ensure emissions compliance for On-Board Diagnostic (OBD).
10188550
Date: 2021-02-10. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT, EQUIPMENT ADAPTIVE/MOBILITY, VISIBILITY.
Information Only A?A A Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
10185190
Date: 2020-12-18. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, EQUIPMENT ADAPTIVE/MOBILITY, POWER TRAIN.
Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
10177935
Date: 2020-07-29. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES.
Fix-As-Fail - Bendix New-Gen Lightweight Steer Axle Drum Brake Spider Cracking
10177021
Date: 2020-06-08. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
Information 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.
10173583
Date: 2020-03-27. Type: Service Bulletin/Repair Instructions. Systems: STRUCTURE.
DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to resolve the vibration on the tank cover by adding bottom tank washers.
10173205
Date: 2020-03-17. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.