No complaints are listed for the 2009 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.
17 recalls. Showing the latest 10 of 17.
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: 2011-03-24. Systems: ENGINE AND ENGINE COOLING.
Defect: 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 CERTAIN BODIES USED ON C15 ENGINES. (excerpt)
Consequence: THIS COULD RESULT IN A FIRE. (excerpt)
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 TH (excerpt)
Do not drive: No. Park outside: No.
Date: 2011-02-23. Systems: FUEL SYSTEM, OTHER.
Defect: 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 MODU (excerpt)
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. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2010-10-27. Systems: SERVICE BRAKES, AIR.
Defect: 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 THE OUTERMOST BRAKE PADS WEAR AND THE FLOAT (excerpt)
Consequence: AS THIS INTERFERENCE GETS LARGER, THIS COULD EVENTUALLY LEAD TO REDUCED BRAKING PERFORMANCE, INCREASING THE RISK OF A CRASH. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2010-07-02. Systems: STEERING.
Defect: 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 SPEED, HIGH TORQUE TURN, POSSIBLY RESULTING I (excerpt)
Consequence: A SEPARATION OF THE SPLINED AND NON-SPLINED TUBES WOULD CAUSE A LOSS OF STEERING CONTROL AND INCREASE THE RISK OF A VEHICLE CRASH. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2010-06-16. Systems: LATCHES/LOCKS/LINKAGES.
Defect: 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 AUTOMATICALLY SET AND IT PREVENTS THE HOOD FR (excerpt)
Consequence: 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. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2009-10-21. Systems: POWER TRAIN.
Defect: 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 ALLOW THE AXLE U-BOLT TO BECOME LOOSE, WH (excerpt)
Consequence: 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. (excerpt)
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. (excerpt)
Do not drive: No. Park outside: No.
Date: 2009-07-08. Systems: STEERING.
Defect: 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.
Consequence: 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.
Do not drive: No. Park outside: No.
Date: 2009-06-30. Systems: SERVICE BRAKES, AIR.
Defect: 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 COMPONENTS.
Consequence: 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.
Do not drive: No. Park outside: No.
Manufacturer communications
36 manufacturer communications.
Communications by system| System | Count |
|---|
| ENGINE AND ENGINE COOLING | 17 |
|---|
| ELECTRICAL SYSTEM | 7 |
|---|
| EQUIPMENT | 5 |
|---|
| FUEL SYSTEM, OTHER | 4 |
|---|
| ENGINE | 2 |
|---|
| FUEL SYSTEM, GASOLINE | 2 |
|---|
| POWER TRAIN | 2 |
|---|
| EQUIPMENT ADAPTIVE/MOBILITY | 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.
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.
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.
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.
10173212
Date: 2020-03-03. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL.
Information Only A?A A Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
10168703
Date: 2019-11-06. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
10045239
Date: 2012-07-18. Type: Service Bulletin/Repair Instructions. Systems: ENGINE, SERVICE BRAKES.
KENWORTH: REGARDING UPDATE INFORMATION FOR ENGINE BRAKE AND THROTTLE PEDAL POSITION RETURN RANGE, WHICH WAS TOO NARROW TO ENGAGE AND ENGINE BRAKE WAS NOT ENGAGING. *PE
10045240
Date: 2012-07-09. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
KENWORTH: OIL COLLECTION AT CAC INTAKE PIPE IS CAUSED BY AN IMBALANCE IN TURBOCHARGER PRESSURES. MODELS T660, T800, T700, AND W900. *PE
10044799
Date: 2012-06-21. Type: Service Bulletin/Repair Instructions. Systems: FUEL SYSTEM, GASOLINE, FUEL SYSTEM, OTHER.
KENWORTH: 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. *PE