No complaints are listed for the 2005 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.
4 recalls.
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.
Date: 2009-05-19. Systems: SERVICE BRAKES, AIR.
Defect: PACCAR IS RECALLING 140 MY 2005, 2007-2009 T800, W900, AND T660 TRUCKS. THE CALIPER MOUNTING FASTENERS ATTACHING THE AIR DISC BRAKE CALIPER ASSEMBLY TO THE TORQUE PLATE MAY HAVE RECEIVED INSUFFICIENT TORQUE DURING THE INSTALLATION PROCESS. THE INSUFFICIENT TORQUE MAY ALLOW THE AIR DISC BRAKE CALIPER ASSEMBLY TO BECOME LOOSE AND POSSIBLY SEPARATE FROM THE VEHICLE.
Consequence: THIS COULD RESULT IN REDUCED BRAKING CAPACITY AND ALSO A ROAD DEBRIS HAZARD, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT AIR DISC BRAKE CALIPER ASSEMBLIES AND REPLACE THE CALIPER MOUNTING FASTENERS AND TORQUE PROPERLY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE MANUFACTURER HAS NOT YET PROVIDED AN OWNER NOTIFICATION SCHEDULE. OWNERS MAY CONTACT KENWORTH AT 1-425-828-5440.
Do not drive: No. Park outside: No.
Date: 2008-09-24. Systems: SUSPENSION.
Defect: PACCAR IS RECALLING 130 MY 2004-2009 T2000, T800, T600, W900 AND T660 KENWORTH TRUCKS BUILT WITH AN AG400 REAR SUSPENSION, LONG STROKE BRAKE CHAMBERS, AND WIDE BASE TIRES (SUPER SINGLES). THESE VEHICLES MAY DEVELOP AN INCREASE IN LATERAL AND VERTICAL AXLE MOVEMENT. THIS MOVEMENT MAY CAUSE PART OR PARTS OF THE BRAKE ASSEMBLY (BRAKE CAM TUBE SUPPORT, BRAKE CHAMBER BRACKET, BRAKE CHAMBER, BRAKE SPI (excerpt)
Consequence: A FAILURE MAY REDUCE VEHICLE BRAKE PERFORMANCE, INCREASING THE RISK OF A CRASH. (excerpt)
Remedy: DEALERS WILL INSTALL THE CAM TUBE SUPPORT BRACKETS ON ALL OF THE REAR AXLE WHEEL ENDS. INSPECT THE REAR AXLE BRAKE ASSEMBLY AND REPLACE IT IF CRACKED. THE RECALL IS EXPECTED TO BEGIN DURING NOVEMBER 2008. OWNERS MAY CONTACT KENWORTH AT 1-425-828-5440. (excerpt)
Do not drive: No. Park outside: No.
Date: 2007-06-26. Systems: TRAILER HITCHES.
Defect: ON CERTAIN TRUCKS, THE REMOVABLE TOW HITCH ,WHEN USED TO TOW OR LIFT A VEHICLE, CAN FAIL DUE TO DEFECTIVE MATERIAL IN THE TOW HITCH.
Consequence: IF THE TOW HITCH ASSEMBLY FAILS WHILE A VEHICLE IS BEING TOWED OR LIFTED, IT MAY CAUSE AN ACCIDENT THAT COULD RESULT IN PERSONAL INJURY OR DEATH.
Remedy: DEALERS WILL REPLACE THE TOW PIN ASSEMBLY FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 4, 2007. OWNERS MAY CONTACT KENWORTH AT 425-828-5440 OR PETERBILT AT 940-591-4201.
Do not drive: No. Park outside: No.
Manufacturer communications
14 manufacturer communications.
Communications by system| System | Count |
|---|
| ENGINE AND ENGINE COOLING | 8 |
|---|
| ELECTRICAL SYSTEM | 3 |
|---|
| EQUIPMENT | 2 |
|---|
| ENGINE | 1 |
|---|
| EQUIPMENT ADAPTIVE/MOBILITY | 1 |
|---|
| VEHICLE SPEED CONTROL | 1 |
|---|
| VISIBILITY | 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."
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.
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
10040181
Date: 2010-12-15. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
PACCAR: ENGINEERING STANDARDS HAVE CHANGED AND THERE ARE NOW ENGINES WITH HEAT TREATED BOLTS. *RM
10040180
Date: 2010-12-02. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
PACCAR: A SOFTWARE UPDATE IS CAUSING THE CHECK ENGINE LIGHT TO COME ON. *RM
10026047
Date: 2009-03-18. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
KENWORTH: CLEAN POWER SYSTEM HIGH VOLTAGE REPAIR. HIGH VOLTAGE WARNING LIGHT ON THE VOLTMETER. T660S BUILT AND EQUIPPED WITH THE KENWORTH CLEAN POWER SYSTEM SINCE 05/25/07. *PE UPDATED 9/29/09. *PE