The worst 2017 Kenworth T660 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 6
Service brakes, air: antilock: ABS warning light
- What is wrong
- 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."
- Risk
- If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
- 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.
Recall number 20V199000 · Recall details
Engine and engine cooling: engine: diesel
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2017-2019 Kenworth C500, T600, T660, T680, T800, T880 and W900 trucks, as well as Peterbilt 367, 386, 389, 567, 579 and 587 trucks, equipped with Cummins ISX15 or X15 diesel engines. In certain driving conditions, such as on a long down-hill grade, the fuel line may burst if the fuel pump cooling circuit screen becomes restricted.
- Risk
- If the fuel line bursts, fuel may leak onto the road resulting in a roadway hazard for other motorists. The engine may also stall without warning, resulting in the vehicle's inability to restart, increasing the risk of a crash.
- Remedy
- Cummins will notify owners, and dealers will replace the suspect fuel pump cooling circuit screen, free of charge. The recall began November 21, 2018. Owners may contact PACCAR customer service at 1‑940‑591‑4220. PACCAR's number for this recall is 18E081.
Recall number 18V657000 · Recall details
Electrical system: wiring
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2016-2019 Kenworth C500, T660, T800, and W900 vehicles, equipped with 1.9M ISX15 engines. The engine harnesses may have been manufactured without check engine light (CEL) and stop engine light (SEL) circuits, preventing the driver from being warned of a serious engine problem.
- Risk
- If the driver is not warned of a serious engine problem, the engine may unexpectedly fail, increasing the risk of a crash.
- Remedy
- PACCAR will notify owners, and dealers will inspect or test the ISX15 engine harness, and install an overlay jumper harness to supply the missing CEL and SEL circuits, free of charge. The recall began November 30, 2018. Owners may contact PACCAR customer service at 1‑918‑259‑3258. PACCAR's number for this recall is 18KWE.
Recall number 18V555000 · Recall details
Electronic stability control (ESC)
- What is wrong
- 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 requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles."
- Risk
- If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
- 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.
Recall number 18V368000 · Recall details
Tires
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain model year 2017 Kenworth K370, T270, T370, T440, T660, T800 trucks manufactured February 2, 2016, to October 13, 2016, and Peterbilt 330, 337, 348, 367, 389, 567, and 579 trucks manufactured March 7, 2016, to October 5, 2016. The affected vehicles are equipped with certain Goodyear LHS Load Range G tires, size 295/75R22.5 G399A, that due to incomplete adhesion, have a tire tread that may partially separate.
- Risk
- A partial tread separation may increase the risk of a crash.
- Remedy
- Goodyear will notify the owners of the affected Peterbilt and Kenworth vehicles and Goodyear dealers will replace the affected tires, free of charge. The recall began on December 14, 2016. To find a Goodyear dealer, owners should contact Goodyear Consumer Relations at 1‑800‑592‑3267. Consumers may also contact Kenworth customer service at 1‑425‑828‑5000 and Peterbilt customer service at 1‑940‑591‑4000. PACCAR's number for this recall is 1016G (PB) (Peterbilt), and 16KWC (Kenworth).
Recall number 16V803000 · Recall details
Electrical system: ignition: module
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain model year 2017 Kenworth C500, T660, T680, T800, T880, and W900 vehicles manufactured March 9, 2016, to April 26, 2016 and 2017 Peterbilt 320, 365, 367, 389, 567, 579, and 587 vehicles manufactured March 10, 2016, to May 6, 2016. The affected vehicles are equipped with Cummins ISX12 or ISX15 engines and have an engine control module (ECM) that may short circuit, causing the engine to stall without warning without the ability to restart it.
- Risk
- An engine stall can increase the risk of a crash.
- Remedy
- Cummins will notify owners, and Cummins dealers will replace the defective engine control modules, free of charge. The began on July 8, 2016. Owners may contact Cummins customer service at 1‑800‑343‑7357, Kenworth customer service at 1‑425‑828‑5000 or Peterbilt customer service at 1‑940‑591‑4000. PACCAR's numbers for this recall are 16KWB (Kenworth) and 616-C (Peterbilt).
Recall number 16V426000 · Recall details
Technical service bulletins for the 2017 Kenworth T660 24
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes
- CARB Chassis Update
- Safety recall
- Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air...
- Certain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins...
- Info Only
- Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid...
- Fix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are...
- Information Only – Windshield washer pumps have a high No Trouble Found rate
- Fix-As-Fail
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Questions about the 2017 Kenworth T660
Is the 2017 Kenworth T660 reliable?
Owners have filed 0 complaints about the 2017 Kenworth T660.
What is the most common problem with the 2017 Kenworth T660?
There are not enough complaints to tell.
How many recalls does the 2017 Kenworth T660 have?
6 recalls, covering service brakes, air, engine and engine cooling and electrical system.
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