2018 Peterbilt 579 Technical Service Bulletins

91 technical service bulletins (TSBs) are on record for the 2018 Peterbilt 579. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11037541Sep 11, 2026Engine. "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."
• 11037451Sep 5, 2026Engine. An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines.
• 11035343Jul 25, 2026Engine. 105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. Total chassis population is 732.
• 11035111Jul 10, 2026Engine. The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.
• 11033351May 6, 2026Electrical system. Troubleshooting procedures for 2.1m cab power windows are now available.
• 11032293Apr 17, 2026Engine. The attached procedures document has been updated with more detail and explanations. This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
• 11032290Apr 16, 2026Other or unknown. Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.
• 11032284Apr 1, 2026Engine, Electrical system. EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
• 11028314Jan 31, 2026Engine. Procedure pictures updated for clarity. When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process but must be used alongside Cummins troubleshooting steps. Cummins Quickserve will reference this bulletin for fault codes 555 or 556.
• 11022487Aug 4, 2025Electrical system. "Campaign New and improved software is now required for chassis equipped with an Engine Model Year 2016 PACCAR MX-13 engine to maintain DEF sensor performance and ensure compliance with emissions standards.
• 11019217May 22, 2025Transmission and drivetrain. T016: Warranty section updated to include 0.5 hours for test drive. Recommended Repair T016C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25-17A for 6.9 hours created to replace all other codes. 26-040: Warranty section updated to include 0.5 hours for test drive. Recommended Repair 26040C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim…
• 11010926Nov 22, 2024Engine. Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warranty claims. Engine starting system warranty claims now require a completed Starter Checklist, a Battery Pack Midtronics…
• 11009757Oct 22, 2024Transmission and drivetrain, Engine. 7/700 Service Agreement - Letter Only.
• 11005516Jul 30, 2024Suspension. Fix As Fail The height control valve (HCV) rod on vehicles with low air leaf suspensions is prone to toggling over center during rough road conditions. With full suspension articulation, HCV bracket flexes and toggles over center the HCV linkage, which results in either deflated airbags or makes them unable to inflate. Fix-as-fail start date is 07/30/2024.
• 10244481Oct 17, 2023Engine cooling. A testing procedure has been created for the coolant level sensor on model 520.
• 10243354Sep 18, 2023Electrical system. For all Peterbilt chassis equipped with an air shifted PTO. Oil from the air shift cover of the PTO may leak into the air line, causing the EOA solenoid to become inoperative.
• 10238387Jun 23, 2023Visibility (wipers, defrost, mirrors), Engine cooling. Fix-as-Fail - HVAC Intermittently Stops Blowing Cold Air
• 10232160Feb 27, 2023Engine cooling. Certain Engine Model Year 2018 PACCAR MX-11 engines must have the crankcase pressure sensor replaced due to contamination during assembly.
• 10232162Feb 10, 2023Electrical system, Body and structure. Fix As Fail – Chassis that were manufactured with certain battery cable routing brackets may experience rubbing or chafing of the battery cables.
• 10231101Jan 12, 2023Engine 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. Customers that do not receive this repair may be responsible for progressive engine damage caused by broken oil bypass valve tabs.
• 10227172Nov 7, 2022Fuel system, Electrical system. 21PBN – LNG/CNG Methane Detecti on System Will Not Warn Operator if System Loses Power – NHTSA ID:21V00N, TC: 2021-793
• 10225578Oct 18, 2022Engine 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 cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles.
• 10222269Sep 9, 2022Suspension. Fix-As-Fail On certain chassis with Low Air Leaf Suspension or Low-Low Air Leaf Suspension, the Height Control Valve (HCV) arm may be rubbing on other components when the bend in the arm is facing outboard. Flipping the bend in the HCV arm inboard prevents the rub.
• 10219235Aug 3, 2022Brakes. The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
• 10210949Apr 4, 2022Equipment, Body and structure. A roof fairing reinforcement kit increases structural support for one-piece 579 roof fairings that are experiencing fatigue from external forces such as reverse towing.
• 10208758Feb 4, 2022Equipment. 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 antennas as a primary antenna may experience this degradation.
• 10207154Jan 7, 2022Fuel system, Equipment, Electrical system. Interim Safety Recall – Methane detection system will not warn the operator if the system loses power. The driver could be unaware of an issue with the methane detection system or excessive methane present, increasing the risk of a fire, crash and/or personal injury. The repair procedure will be added when it is available.
• 10206097Dec 2, 2021Transmission and drivetrain. Non-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.
• 10206090Dec 2, 2021Brakes. ​Safety Recall – Work Brake May Unintentionally Disengage – NHTSA ID: 21V906, TC: 2021-713. The work brake (also known as winch brake) may unintentionally disengage during winching operations, releasing the service brakes, increasing the risk of crash or injury. The VECU software will be updated to correctly set the speed interlock parameter.
• 10206084Dec 2, 2021Transmission and drivetrain. Non-Safety Campaign:Â 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.
• 10203783Nov 9, 2021Engine cooling, Electrical system. Non-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.
• 10203780Nov 9, 2021Electronic stability control. Non-Safety Campaign - The TPMS ECU is not communicating properly with TPMS sensors. The result is a delay or failure of communication between the TPMS ECU and the TPMS sensors , causing inaccurate TPMS readings. A firmware update resolves the issue.
• 10201965Sep 21, 2021Fuel system. Fix-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.
• 10198760Jun 8, 2021Engine cooling. An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
• 10194769May 25, 2021Engine cooling. Selected engines have been identified to receive a camshaft inspection and an update for improved camshaft lubrication.
• 10191768Apr 13, 2021Body and structure. Non-Safety Campaign- Chassis Fairings become loose and rattle.
• 10188468Feb 25, 2021Engine cooling. Non-Safety Campaign – Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
• 10188467Feb 25, 2021Electrical system. Non-Safety Campaign – The batteries may drain quickly due to the VECU not going to sleep. Updated VECU software is available to resolve the issue.
• 10188550Feb 10, 2021Equipment, Visibility (wipers, defrost, mirrors). Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
• 10185187Dec 23, 2020Transmission and drivetrain. Fix-As-Fail - Prior versions of PACCAR transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
• 10185190Dec 18, 2020Transmission and drivetrain, Equipment, Electrical system. 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.
• 10185189Dec 18, 2020Equipment, Transmission and drivetrain. Non-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Resolution is to update the transmission software and calibrations.
• 10183724Nov 11, 2020Electrical system. Fix as Fail The HVAC system, on model 579 and 567 vehicles manufactured since 1/20/2012 may have inadequate temperature control. The HVAC may intermittently stop blowing cold air, typically after a truck restart. Driver may notice the system returns to normal after key cycle. The remedy is updating HVAC software.
• 10182219Oct 1, 2020Brakes, Equipment. Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fail near the bottom of the frame rail.
• 10179371Aug 26, 2020Electrical system, Engine cooling, Equipment. Fix-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.
• 10179370Aug 25, 2020Body and structure, Equipment, Electrical system. Fix as Fail: Peterbilt has determined that certain model 348, 365, 367, 382, 384, 386, 388, 389, 567, 579, and 587 trucks, built between 4/13/2010 and 3/16/2020 and equipped with a flush mounted battery box, utilized rubber washers that could rub through and cause the aluminum box mounting tabs to rub directly on the steel frame brackets. This could result in cracked battery box mounting angles. Resolution is to…
• 10177935Jul 29, 2020Brakes. Fix-As-Fail - Bendix New-Gen Lightweight Steer Axle Drum Brake Spider Cracking
• 10177019Jun 10, 2020Body and structure, Engine cooling. Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (“SOC”) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the exhaust stack to rotate and contact the cab or sleeper.
• 10177021Jun 8, 2020Electrical 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.
• 10176033May 29, 2020Transmission and drivetrain. Information only: Hendrickson Softek front axle maintenance intervals and requirements.

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