2020 Kenworth T680
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
Have the VIN?
Vehicles › Kenworth › T680 › 2020
These records cover every 2020 Kenworth T680. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
8 recalls name the 2020 Kenworth T680. Newest first.
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…
Risk and remedy
Risk
Insufficient air volume can reduce braking performance and increase the risk of a crash.
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.
PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T880, T800, W900, W990; and 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, and 579 vehicles. The Dana D-Series axle steer arm fasteners that attach the steering arm to the steering knuckle may fail.
Risk and remedy
Risk
Fastener failure can result in a loss of steering control, increasing the risk of a crash or injury.
Remedy
Dealers will replace and torque the steer arm fasteners, at no charge. Owner notification letters were mailed November 8, 2022. Owners may contact Kenworth customer service at 1-425-828-5888 and Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall are 22 PBB and 22 KWB.
PACCAR Incorporated (PACCAR) is recalling certain 2016-2022 Peterbilt 567, 579, 2021-2022 Peterbilt 536, 2017-2021 Kenworth T880, 2016-2022 Kenworth T680, 2018-2020 Kenworth T440, 2020 Kenworth T270, and 2021 Kenworth T280 vehicles. The methane detection system will not function if the system loses power.
Risk and remedy
Risk
The operator may be unaware of a system malfunction or the presence of excessive methane levels, increasing the risk of injury or fire.
Remedy
Dealers will re-wire the warning alarm, free of charge. Owner notification letters were mailed December 1, 2022. Owners may contact Peterbilt customer service at 1-940-591-4220, and Kenworth customer service at 1-425-828-5888. PACCAR's numbers for this recall are 21KWH and 21PBN.
PACCAR Incorporated (PACCAR) is recalling certain 2016-2021 Kenworth T680 trucks equipped with a 2.1m Cab and WABCO 6S/6M ABS brake system with drum brakes. The brake systems were manufactured with a standard rear-brake ABS modulator valve instead of a quick release valve, which may exceed the intended service-brake release timing. As such, these vehicles…
Risk and remedy
Risk
Longer than expected service-brake release timing may lengthen vehicle stopping distance, increasing the risk of a crash.
Remedy
PACCAR will notify owners, and dealers will replace the standard rear-brake, ABS modulator valve with a quick release valve, free of charge. The recall began November 30, 2020. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 20KWD.
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…
Risk and remedy
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.
PACCAR Incorporated (PACCAR) is recalling certain 2020 Peterbilt 520 and 579 vehicles and Kenworth T680, T880 and W990 vehicles. The mirror glass may detach from the mirror carrier plate due to inadequate adhesion.
Risk and remedy
Risk
If the mirror glass detaches, the driver may have reduced visibility and the mirror glass will become a road hazard that may strike another vehicle or pedestrian, increasing the risk of a crash or injury.
Remedy
PACCAR has notified owners, and dealers will inspect the upper mirror glass/mirror carrier, replacing it as necessary, free of charge. The recall began May 31, 2019. Kenworth owners may contact PACCAR customer service at 1-425-828-5888 and Peterbilt owners may call 1-940-591-4220. PACCAR's numbers for this recall is 19KWC and 19PBC.
PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 T680 and T880 tandem axle vehicles equipped with a parking brake on a single axle and certain models of automated manual transmissions. During cold temperatures, the signal from the park brake pressure switch to the transmission controller may be delayed possibly resulting in the vehicle moving…
Risk and remedy
Risk
Unexpected vehicle movement may increase the risk of a crash or injury.
Remedy
PACCAR will notify owners and dealers will replace the park brake pressure switch, free of charge. PACCAR issued owners and interim notification on June 3, 2019. The recall began August 6, 2019. Owners may contact PACCAR customer service at 1-918-259-3258. PACCAR's number for this recall is 19KWB.
PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T680, T800, T880, W900 and W990 trucks. The rear axles may not contain oil.
Risk and remedy
Risk
Without lubricating oil, the bearings, hub and axle shafts may wear, resulting in the separation of a wheel end from the axle, increasing the risk of a crash.
Remedy
Paccar will notify owners, and Kenworth dealers will inspect all of the rear axles for the presence of oil. If no oil is present, the wheels ends will be removed and the bearings, hub and axle shaft will be inspected for damage. If excessive wear or heat damage is evident, the components will be replaced, as necessary. Oil will then be added per the axle specifications. These repairs will be performed free of charge. The recall began April 16, 2019. Owners may contact Kenworth customer service at 1-425-828-5888. Paccar's number for this recall is 19KWA.
Owner complaints
8 complaints
What owners report most
Latest complaints
- Power train
Right-hand shift stalk between the shifter and the transmission is causing the vehicle to become disabled while stopped and unable to go from forward to reverse. Also getting SPN 639 pop-up when communication has been lost between the engine control module (ECM) and SAE J1939 data link. The check…
Right-hand shift stalk between the shifter and the transmission is causing the vehicle to become disabled while stopped and unable to go from forward to reverse. Also getting SPN 639 pop-up when communication has been lost between the engine control module (ECM) and SAE J1939 data link. The check engine light illuminates, and the ECM immediately logs the fault code. Have to depress brake pedal while stopped & cycle gear selector to get fault to clear to start engine . Message also displayed Transmission Fault Repair Required Find Service Center . Also had new spring clutch replaced in May of 2024. Truck has 525k miles on it .
- Power train
The clutch Spring on these trucks have been failing heavily. We have a couple more of these trucks and they all have the same issue. the housing for the clutch springs are cracked or damaged at less than 500,000 miles on a heavy duty truck. These clutches are supposed to last over 1MM miles. Its…
The clutch Spring on these trucks have been failing heavily. We have a couple more of these trucks and they all have the same issue. the housing for the clutch springs are cracked or damaged at less than 500,000 miles on a heavy duty truck. These clutches are supposed to last over 1MM miles. Its not a coincidence that every truck we have is failing at the same mileage. These clutches are made defective from the manufacturer. Its also a coincidence that the replacement clutches are not the original design and are of a newer design and brand. THIS is RED FLAGS!!!!
- Power train
My circumstances are EXACTLY as described in a release 12/19/2019 Tech Service Bulletin A002 I experienced the vibration in my steering wheel that caused me to be suspect that there was something wrong in the drive train. Upon further investigation. I noticed that an oil seal was leaking, and when…
My circumstances are EXACTLY as described in a release 12/19/2019 Tech Service Bulletin A002 I experienced the vibration in my steering wheel that caused me to be suspect that there was something wrong in the drive train. Upon further investigation. I noticed that an oil seal was leaking, and when I dug a little deeper, I noticed gears that were broken and shaved down and then stopped at a Kenworth corporate location upon which they told me that I needed to purchase the entire unit to fix it. I then decided that I was going to add some differential oil and drive at a speed of 45 miles an hour, which did not cause any vibration to Chicago, which was roughly 3 hours away from my location in Michigan upon which I would have more resources at my disposal. It is then that I learned of the technical service bulletin relating to my issue. I then took it to CIT trucks which is where I learned that you do not have to buy the complete unit that. The parts are available to be purchased to fix the issue. They did, however say that they would process the claim on behalf of this technical service bulletin. They advised me that the individual that they got a hold of seem to have an attitude about it and sometimes this happens whereas other times they will get a hold of somebody that will make an exception. Apparently they stated my situation is two months out of warranty from when my tractor was placed into service but it’s original owner. I am not in a position due to other issues that I have experience with the truck since purchasing it in June that I can afford this but more importantly, there is a known issue with the same exact identical problem that I experienced. I need help with my situation they need to be held accountable for what has gone wrong because it is not my fault.
- Power train
The clutch has a loose spring, Fork is damaged. Throwout bearing worn.
- Power train
Throw out bearing failed prematurely. Truck only has 491,000 miles and has had a catastrophic failure resulting in a $29,000 repair bill. I have 4 other trucks like this and they are all showing signs of the same thing.
- Unknown or other
When driving, the truck will not go into gear. For example, if I am trying to shift gears in the automatic, it will stay in that gear. When traveling down the highway, it stays in a gear. I have to find a safe place to pull over and put it in neutral, then proceed. I have already changed the…
When driving, the truck will not go into gear. For example, if I am trying to shift gears in the automatic, it will stay in that gear. When traveling down the highway, it stays in a gear. I have to find a safe place to pull over and put it in neutral, then proceed. I have already changed the right hand stalk once before and it didnt go into reverse, that was the reason for changing it. I get codes saying that it needs to ve changed again and it was just recently put on.
- Forward collision avoidance › Adaptive cruise control · Forward collision avoidance › Warnings · Service brakes
This truck was breaking automatically, and no one was front of the truck, it was scary, I almost crashed with loaded trailer on my back, it has done it multiple times, and my traction light and stability light is on all the time and adaptive cruise control had turned off completely abs light comes on and off frequently,
- Service brakes · Vehicle speed control
On sunday, the 22ND of march, I was traveling south on us hwy 45. The sky was clearing and the road was dry. I had my cruise set to 65 mph. As I approached an overpass, the distance sensor on the front of the truck mistook the shadow of the overpass as a stopped vehicle. Warning lights and buzzers…
On sunday, the 22ND of march, I was traveling south on us hwy 45. The sky was clearing and the road was dry. I had my cruise set to 65 mph. As I approached an overpass, the distance sensor on the front of the truck mistook the shadow of the overpass as a stopped vehicle. Warning lights and buzzers went off and the vehicle did a hard brake. Luckily, there were no other vehicles around me. I took it to our shop and the system was cleaned. Four days later, the sensor mistook an overhead interstate sign for a stopped vehicle. Again, the warning lights and buzzers and a hard brake. Kenworth techs were sent out to our shop to make repairs. Every one of our drivers that I have spoken to have experienced the same thing multiple times. This IS dangerous. If someone had been following me, they would have rear-ended my trailer.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11000765Campaign Certain PACCAR MX-13 engines contain bolts for the main bearing caps which may fail under certain conditions.
- 10254164Certain 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 Air Brake Systems. This bulletin will be updated when repair parts and procedures are available.
- 10243362Replacement fuel bezels are available for T680 Next Gen fairings. New bezels have updated attachments to prevent the bezel from becoming loose.
- 10243358Certain T680 Next Gen Cummins X15 have fan hub bracket hardware that is under torqued and could become loose and/or fail. Procedures are available to replace and properly torque the hardware.
- 10238382Certain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins ISX12/ISX15/X15 engines that had a previously failed DEF sensor and with DEF sensor software disabled due to industry DEF sensor shortages will now be able to receive a replacement DEF sensor, DEF tank heater coolant control valve, and re-enabled DEF diagnostic software. Please note that chassis equipped with PACCAR PX engines will be eligible for this repair at a future date when software is available.
- 10232496Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
- 10231101This campaign is the final opportunity to replace the oil filter screw cap to reduce occurrences of broken bypass valve tabs. Broken oil valve tabs can cause oil flow obstruction to critical engine parts, resulting in serious engine damage. Customers that do not receive this repair may be responsible for progressive engine damage caused by broken oil bypass valve tabs.
- 10225581Certain T680 NextGen air filter elements that may have been damaged due to excessive vibration were replaced without inspecting the air intake system for dust intrusion. Those vehicles must be inspected to assess possible progressive damage."
- 10225578Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles.
- 10218895Kenworth 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.
- 10213089Safety Recall Interim Notification - The Dana D-Series front axle steer arm fasteners that attach the steer arm to the steering knuckle may fail, increasing the risk of a crash or injury. Repair information will be added when a repair procedure and parts are available.
- 10208770Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation
- 10207153Retrofit - The emissions exemption will be expiring on 5/15/2022 for certain pre-production vehicles equipped with PACCAR MX-11 and MX-13 EPA 2021 Emissions engines. Production-level components are now available to make these vehicles compliant.
- 10206097Non-Safety Campaign: Drivers of vehicles equipped with PACCAR TX-12 transmissions may experience harsh shifts and gear grinding noise. Premature Main Drive Gear damage may occur due to clutch housing and main case countershaft bearing bore wear.
- 10206084Non-Safety Campaign: Eaton Endurant transmissions may experience premature Main Drive Gear damage due to clutch housing and main case countershaft bearing bore wear. A Clutch Housing Front Cover Kit will be installed to address the issue.
- 10203772Non-Safety Campaign Vehicles with a Cummins X15 engine and Horton fan drive may set Diagnostic Trouble Code (DTC) 6637 and/or 3838 due to fan speed that results in the fan remaining activated until the power is cycled. A new controller will resolve the issue.
- 10201965Fix-As-Fail Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue operation with a failed DEF sensor by disabling the DEF sensor diagnostics.
- 10201956Information Only - Rear axle Quarter Fenders with less than two inches of clearance between the top of the quarter fender and the bottom of the trailer/equipment are susceptible to damage. The lack of clearance could result in cracked/broken quarter fenders or complete separation if undetected or un-remedied.
- 10198762Information Only C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter (PM) sensors installed .
- 10188550Information Only Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
- 10188468Non-Safety Campaign Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
- 10188467Non-Safety Campaign The batteries may drain quickly due to the VECU not going to sleep. Updated VECU software is available to resolve the issue.
- 10186164T680 predictive cruise control(PCC) incompatibility with cummins engine.
- 10185191Non-Safety Campaign - Vehicles included in Model Year 2021 Pre-Production Engine program have an Emissions Exemption label that must be replaced. The current Emissions Exemption label will expire on 12/31/2020 and requires a new label to extend the exempt
- 10185190Fix-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.
- 10182216Fix-As-Fail The Battery Management System (BMS) may report the incorrect battery condition. Additional diagnostics are available to correctly determine and repair the root cause of the issue.
- 10180726Information only: In 2020, Peterbilt and Kenworth began using the same M10, M12, M16, and M20 frame fasteners on all vehicles. Torque specifications for these fasteners are different from previous fasteners.
- 10179371Fix-As-Fail The Master Switch Module (MSM) may lose dash switch memory and functionality when the battery disconnect switch is cycled. An improved MSM is available to resolve the issue.
- 10177942Non-Safety Campaign The end cap welds on certain fuel tanks may not meet internal quality standards due to improper weld equipment settings. The fuel tanks will be replaced.
- 10177021Information 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.
- 10173205Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
- 10172037Fix-As-Fail: The seal on T680, T880, and W990 windshields may be delaminated. Replace the windshield and encapsulated seal to resolve the issue.
- 10171030Information Only: The AutoStart System Test does not recognize the hood opening and closing when running the test on a model 579 or 567 chassis equipped with a VECU software version 9.8 and 9.9. The issue will be fixed on a future VECU software update. This bulletin will be updated when the resolution is available.
- 10171021Information Only - Driver Performance Assistance (DPA) Coasting and Braking Scores Not Incrementing, Stays at 50%. The average score will never change nor create driver assistance popups based upon drivers actions. A future software update will resolve the issue. This bulletin will be updated when the software update becomes available.
- 10169787Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
- 10169711This bulletin has been obsoleted and replaced by Safety Recall 19KWE.
- 10168703Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
- 10168654Fix As Fail-Shudder sensation near the governed vehicle speed when using cruise control due to excessive control messaging from VECU. A VECU software update is available to correct the condition.
- 10165583Information Only This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
- 10164375Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.
Every Kenworth T680 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.