2019 KENWORTH T680 Complaints and Recall Information
The 2019 KENWORTH T680 has 1 complaint and 10 recalls filed with NHTSA. Owners most frequently report issues with the transmission, including a transmission fault error that causes the vehicle to stop unexpectedly on highways. Drivers state the truck changes gears erratically and maintains high RPMs before shutting down and restarting normally, suggesting possible widespread failure of the MTM and transmission components.
Common Issues
- Transmission fault error. The transmission fault indicator activates while driving, causing the truck to stop unexpectedly on the highway.
- Erratic gear changes. The vehicle shifts gears improperly and keeps engine RPMs high, disrupting normal operation.
- Transmission failure. Reports indicate the MTM component failure destroys the transmission, necessitating full transmission replacement.
The 2019 KENWORTH T680 is subject to 10 recalls addressing various systems including braking, steering, engine, electrical wiring, and lighting. These recalls affect safety-critical components such as air brakes, steering fasteners, parking brakes, electronic stability control, and diesel engine fuel lines. Repairs typically involve part replacement or software updates performed at no cost to owners.
Recalls
- Air brake reservoirs (NHTSA 24V145000). Affected 996 vehicles have air tanks with insufficient volume, reducing braking performance. Dealers will install correct volume air tanks free of charge.
- Steering fasteners (NHTSA 22V277000). Dana D-Series steer arm fasteners may fail on 17,641 trucks, risking loss of steering control. Dealers will replace and torque fasteners at no cost.
- Parking brake pressure switch (NHTSA 19V275000). On 1,837 trucks, delayed park brake signal during cold weather may cause unexpected vehicle movement. Repair involves pressure switch replacement free of charge.
- Electrical wiring for methane detection (NHTSA 21V00N000). Wiring defect on 1,107 trucks disables methane detection system if power is lost, increasing injury or fire risk. Dealers will re-wire the warning alarm at no cost.
- Rear brake ABS modulator valve (NHTSA 20V593000). Affected 1,416 trucks have modulator valves causing delayed brake release, lengthening stopping distance. Dealers will replace with quick release valves without charge.
- Electronic Stability Control software (NHTSA 20V199000). Over 460,000 trucks may operate without ABS warning light functioning after power loss, increasing crash risk. Dealers will update NAMUX software free of charge.
- Diesel engine fuel pump cooling circuit (NHTSA 18V657000). On 48,896 trucks, restricted cooling screen may cause fuel line bursts and engine stalls in certain driving conditions. Dealers will replace the cooling circuit screen at no cost.
- Clutch assembly internal failure (NHTSA 18V931000). A defect on 25,556 trucks with automated manual transmissions may cause unintended vehicle movement. Dealers will update transmission control software free of charge.
- Exterior side marker lamps (NHTSA 18V816000). On 1,619 trucks, missing reflex reflectors reduce vehicle visibility. Dealers will install reflex reflective tape at no charge.
Owners dealing with repeated transmission failures or safety-related recall issues may have rights under their state’s lemon law. Those with ongoing problems involving safety defects or unresolved recalls should consider consulting legal resources for potential remedies.
2019 KENWORTH T680 Summary
2019
Model Year
1
Total Complaints
9
Total Recalls
559583
Vehicles Affected
Recalls
2019 KENWORTH T680
996 vehicles affected
SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK
PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2008-2024 Kenworth T800, 2009-2020 Kenworth T370, 2013-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, 2021-2023 Kenworth T800B, and 2009-2019 Kenworth W900 vehicles. The air tanks have an insufficient volume of air for the brake system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: Insufficient air volume can reduce braking performance and increase the risk of a crash.
2019 KENWORTH T680
17641 vehicles affected
STEERING:CRITICAL FASTENERS
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: Fastener failure can result in a loss of steering control, increasing the risk of a crash or injury.
2019 KENWORTH T680
1107 vehicles affected
ELECTRICAL SYSTEM:WIRING
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: The operator may be unaware of a system malfunction or the presence of excessive methane levels, increasing the risk of injury or fire.
2019 KENWORTH T680
460515 vehicles affected
SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
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.
2019 KENWORTH T680
1416 vehicles affected
SERVICE BRAKES, AIR:ANTILOCK
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 fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: Longer than expected service-brake release timing may lengthen vehicle stopping distance, increasing the risk of a crash.
2019 KENWORTH T680
1837 vehicles affected
PARKING BRAKE
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 unexpectedly.
Risk: Unexpected vehicle movement may increase the risk of a crash or injury.
2019 KENWORTH T680
1619 vehicles affected
EXTERIOR LIGHTING
PACCAR Incorporated (PACCAR) is recalling certain 2013-2019 Kenworth T680 and T880 and Peterbilt 579 trucks, greater than 30 feet long and equipped with side extender mounted intermediate marker lamp/turn signals that do not include a reflex reflector. Since both intermediate side marker lamps and reflex reflectors are required, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Missing reflex reflectors can reduce the vehicle's visibility to other drivers, increasing the risk of a crash.
2019 KENWORTH T680
25556 vehicles affected
POWER TRAIN:CLUTCH ASSEMBLY
PACCAR Incorporated (PACCAR) is recalling certain 2018-2019 Peterbilt 337, 348, 365, 367, 389, 567, 579 and 587 trucks and 2018-2019 Kenworth C500, T270, T370, T440, T660, T680, T800, T880 and W900 trucks equipped with automated manual transmissions. An internal component in the clutch assembly may fail, possibly resulting in unintended vehicle movement.
Risk: Unintended movement of a vehicle can increase the risk of a crash.
2019 KENWORTH T680
48896 vehicles affected
ENGINE AND ENGINE COOLING:ENGINE:DIESEL
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.
Complaints
2019 KENWORTH T680
ID: 2060626POWER TRAIN
When I was driving on the highway the transmission fault error came on and my truck came to a stop on on the highway. It changed gears weirdly and kept the rpm’s high. Once it came to a stop I turned the truck off and on and it work fine. This has happened multiple times and a nationwide failure of the MTM and transmission is the cause of this. Many of my fellow drivers are having this same issues and are having to replace the whole transmission due to the MTM failing and destroying the transmission.