2021 KENWORTH T680
7 recalls, 0 complaints - 61 TSBs
25V181000 Mar 24, 2025
ELECTRICAL SYSTEM:PROPULSION SYSTEM
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2022-2025 Peterbilt 520, 579, and 2021-2025 Kenworth T680 trucks. The high voltage (HV) contactors may open, causing a sudden loss of high voltage and a loss of drive power.
Consequence
A loss of drive power increases the risk of a crash.
Remedy
Dealers will update the software and replace the electrical harness, free of charge. Owner notification letters were mailed May 13, 2025. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's numbers for this recall are 25PBC... Read more
24V915000 Dec 9, 2024
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to... Read more
Consequence
Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.
Remedy
Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24KWL and 24PBL.
24V190000 Mar 20, 2024
POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Peterbilt 365, 367, 389, 535, 536, 537, 548, 567, 579, and 2021-2025 Kenworth T180, T280, T380, T480, T680, T880 and W990 trucks. The right-hand gear shifter stalk connectors may have been improperly crimped, resulting in a loss of communi... Read more
Consequence
A loss of communication between the gear shifter and the transmission may result in the vehicle becoming disabled after coming to a stop, increasing the risk of a crash.
Remedy
Dealers will inspect and replace the gear shifter assembly as necessary, free of charge. Owner letters were mailed December 15, 2025, then phased after that. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this re... Read more
24V145000 Feb 23, 2024
SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK
Defect Description
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 ve... Read more
Consequence
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.
21V00N000 Dec 29, 2021
ELECTRICAL SYSTEM:WIRING
Defect Description
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... Read more
Consequence
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.
21V080000 Feb 17, 2021
ENGINE
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
Consequence
A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.
Remedy
PACCAR will notify owners, and dealers will properly torque the capscrews and the engine will also be inspected for damage and, if necessary, repaired, free of charge. The recall began on March 29, 2021. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Pet... Read more
20V593000 Sep 28, 2020
SERVICE BRAKES, AIR:ANTILOCK
Defect Description
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 inte... Read more
Consequence
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.
No complaints found for this vehicle.
Technical Service Bulletins, 2021 KENWORTH T680
61 manufacturer communications from 40 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 060000 ENGINE AND ENGINE COOLING | 16 |
| 110000 ELECTRICAL SYSTEM | 9 |
| 350000 EQUIPMENT | 8 |
| 160000 STRUCTURE | 4 |
| 100000 POWER TRAIN | 3 |
| 080000 FUEL SYSTEM, DIESEL | 2 |
| 130000 VISIBILITY | 2 |
| 356000 EQUIPMENT ADAPTIVE/MOBILITY | 2 |
24KWD
Apr 9, 2024
040000 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?Air Brake Systems??A?A?. This bulletin will be updated when repair parts and procedur
24KWE
Mar 21, 2024
110000 ELECTRICAL SYSTEM
Safety Recall a?? INTERIM NOTIFICATION Parts are not currently available for this safety recall. This bulletin will be updated once repair parts are available. The right-hand shift stalk may have an improper wire harness terminal crimp wi
24KWE
Mar 21, 2024
100000 POWER TRAIN
Safety Recall a?? INTERIM NOTIFICATION Parts are not currently available for this safety recall. This bulletin will be updated once repair parts are available. The right-hand shift stalk may have an improper wire harness terminal crimp wi
E306
Oct 18, 2023
080000 FUEL SYSTEM, DIESEL
PACCAR MX-11 & MX-13 EPA2021 Fuel Filter Drain & Change Info Incorrect fuel filter drain and replacement procedures on EPA21 MX-11 and MX-13 engines can result in the following Debris and contaminants introduced into the high-pressure fu
36-008
Sep 11, 2023
353600 EQUIPMENT:ELECTRICAL:INFOTAINMENT
Certain T680 Next Gen pre-production chassis are eligible to receive production-level software, dash switches, and driver information displays.
36-008
Sep 11, 2023
117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Certain T680 Next Gen pre-production chassis are eligible to receive production-level software, dash switches, and driver information displays.
36-008
Sep 11, 2023
110000 ELECTRICAL SYSTEM
Certain T680 Next Gen pre-production chassis are eligible to receive production-level software, dash switches, and driver information displays.
04-022
Sep 1, 2023
160000 STRUCTURE
Replacement fuel bezels are available for T680 Next Gen fairings. New bezels have updated attachments to prevent the bezel from becoming loose.
45-065
Sep 1, 2023
060000 ENGINE AND ENGINE COOLING
Certain 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.
45-065
Sep 1, 2023
100000 POWER TRAIN
Certain 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.
46-003
Aug 1, 2023
110000 ELECTRICAL SYSTEM
There is currently a repair procedure available for T680E and T880E chassis that will address issues caused by the previous BEV2 R5.00_002 software update. This repair involves replacement of the Bendix ABS control module with an updated ve
E290
Jun 28, 2023
060000 ENGINE AND ENGINE COOLING
FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
E290
Jun 28, 2023
070000 FUEL SYSTEM, GASOLINE
FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
43-072
Jun 2, 2023
060000 ENGINE AND ENGINE COOLING
Certain 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
43-072
Jun 2, 2023
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
Certain 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
02-176
Apr 11, 2023
160000 STRUCTURE
T680 NextGen A-pillar fairing adhesive is not properly securing the fairing to the A-pillar. Procedures are available to apply new adhesive to the A-Pillar fairing.
E300
Mar 31, 2023
060000 ENGINE AND ENGINE COOLING
PACCAR will reimburse customers for the local purchase of in-tank fuel additive for EPA2021 compliant MX engines. This is a one-time reimbursement. Only customers who have received E290 injector cleaning qualify for this reimbursement. See
E290
Mar 31, 2023
060000 ENGINE AND ENGINE COOLING
FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
03-087 (E295)
Feb 24, 2023
060000 ENGINE AND ENGINE COOLING
Certain 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 devel
03-087 (E295)
Feb 24, 2023
092300 FUEL SYSTEM, OTHER:FUEL FILTER
Certain 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 devel
E303
Jan 12, 2023
060000 ENGINE AND ENGINE COOLING
This 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.
41-023
Oct 18, 2022
060000 ENGINE AND ENGINE COOLING
Certain 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
45-064
Oct 18, 2022
060000 ENGINE AND ENGINE COOLING
Info 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 c
E296
Aug 3, 2022
060000 ENGINE AND ENGINE COOLING
Kenworth 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.
42-060
May 20, 2022
060000 ENGINE AND ENGINE COOLING
Fix As Fail - Certain chassis, equipped with an RCX230 Horton fan clutch and a Cummins X15 or ISX12N engine, are experiencing an adapter harness failure. This failure causes the fan to remain activated while the truck is in operation and ma
22KWB
May 10, 2022
010000 STEERING
Safety Recall ??A?A? 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 repai
E286
Mar 23, 2022
350000 EQUIPMENT
Engine Model Year 2021B and later PACCAR MX-11 and MX-13 Fuel Injector Adjustment During First C Service
E286
Mar 23, 2022
060000 ENGINE AND ENGINE COOLING
Engine Model Year 2021B and later PACCAR MX-11 and MX-13 Fuel Injector Adjustment During First C Service
98-020
Mar 18, 2022
350000 EQUIPMENT
nformation Only a?? New Level 1 required tools are available to support MY21B MX engines.
51-013
Feb 4, 2022
110000 ELECTRICAL SYSTEM
Due 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 a
51-013
Feb 4, 2022
350000 EQUIPMENT
Due 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 a
E282
Dec 17, 2021
060000 ENGINE AND ENGINE COOLING
Information Only: Due to differences between the PACCAR MX-11 or MX-13 2021A and 2021B engines, technicians must be able to identify which of these engines are in a chassis.
E280
Dec 2, 2021
060000 ENGINE AND ENGINE COOLING
Non-Safety Campaign: Certain DC tools were incorrectly calibrated. The resulting torque issue could affect the EPA21 MX-11 and MX-13 Oil Pan and/or the Exhaust Manifold.
43-071
Sep 21, 2021
080000 FUEL SYSTEM, DIESEL
Fix-As-Fail a?? 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 veh
02-168
Sep 20, 2021
160000 STRUCTURE
Information 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/broke
21-KWE
Aug 17, 2021
138000 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
Safety Recall a?? Interim Notification - Certain Mahle HVAC control heads may have a soldering defect which may result in inoperative HVAC controls. Inoperative HVAC defrost may reduce driver visibility, increasing the risk of an accident.
21-KWE
Aug 17, 2021
110000 ELECTRICAL SYSTEM
Safety Recall a?? Interim Notification - Certain Mahle HVAC control heads may have a soldering defect which may result in inoperative HVAC controls. Inoperative HVAC defrost may reduce driver visibility, increasing the risk of an accident.
43-069
Aug 17, 2021
350000 EQUIPMENT
A DPF regeneration two-position switch parameter is causing inhibited DPF regeneration. A parameter update, via Cummins Insite, restores proper DPF regeneration function.
43-069
Aug 17, 2021
110000 ELECTRICAL SYSTEM
A DPF regeneration two-position switch parameter is causing inhibited DPF regeneration. A parameter update, via Cummins Insite, restores proper DPF regeneration function.
02-163
Jul 15, 2021
350000 EQUIPMENT
"Non-Safety Campaign - A vinyl camouflage wrap was applied to T680 NextGen built during the pre-production phase of the product launch. The wrap can now be removed."
02-163
Jul 15, 2021
160000 STRUCTURE
"Non-Safety Campaign - A vinyl camouflage wrap was applied to T680 NextGen built during the pre-production phase of the product launch. The wrap can now be removed."
21KWD
Jun 14, 2021
060000 ENGINE AND ENGINE COOLING
Information Only a?? 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 .
32-017
Feb 25, 2021
110000 ELECTRICAL SYSTEM
Non-Safety Campaign a?? The batteries may drain quickly due to the VECU not going to sleep. Updated VECU software is available to resolve the issue.
32-018
Feb 25, 2021
060000 ENGINE AND ENGINE COOLING
Non-Safety Campaign a?? Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
02-160
Feb 10, 2021
130000 VISIBILITY
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
136000 VISIBILITY:WINDSHIELD WIPER/WASHER
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
350000 EQUIPMENT
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
356000 EQUIPMENT ADAPTIVE/MOBILITY
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
E275
Dec 22, 2020
060000 ENGINE (PWS)
Non-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 ex
E275
Dec 22, 2020
355100 EQUIPMENT:OTHER:LABELS
Non-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 ex
E275
Dec 22, 2020
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
Non-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 ex
26-037
Dec 18, 2020
118000 ELECTRICAL SYSTEM:SOFTWARE
Fix-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.
26-037
Dec 18, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
Fix-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.
26-037
Dec 18, 2020
100000 POWER TRAIN
Fix-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.
32-014
Oct 12, 2020
110000 ELECTRICAL SYSTEM
Fix-As-Fail a?? 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.
32-015
Jun 8, 2020
110000 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 incomplet
32-016
Mar 17, 2020
350000 EQUIPMENT
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
02-157
Feb 26, 2020
130000 VISIBILITY
Fix-As-Fail: The seal on T680, T880, and W990 windshields may be delaminated. Replace the windshield and encapsulated seal to resolve the issue.
36-005
Jan 31, 2020
180000 VEHICLE SPEED CONTROL
Information 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 driver??A?A?s actions. A future software u
36-005
Jan 31, 2020
030000 BRAKES (PWS)
Information 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 driver??A?A?s actions. A future software u
51-008
Jul 7, 2016
350000 EQUIPMENT
T680 predictive cruise control(PCC) incompatibility with cummins engine.
KENWORTH T680 - All Years Overview
Complete safety history for the KENWORTH T680 across all model years (2011, 2027).
147
Total Recalls
112
Total Complaints
0
Investigations
3
Reported Crashes
13
Reported Fires
0
Reported Deaths
KENWORTH T680 - Year by Year
Compare recalls and complaints across model years. Click any year to see full details.