2018 Peterbilt 579 Electrical system Problems
- Complaints
- 4about this part
- Share
- 57%of 7 total for the year
- Median mileage
- 48,188miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 2018 Peterbilt 579, 57% of the 7 complaints for this model year. Where a mileage was given, the median is 48,188 miles. 1 a fire, according to the filers. 3 recall campaigns on record are filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The main electrical harness coming out of the main computer and running the entire span underneath the cab had little to no protective sheathing/cord wrap/aluminum wrap protecting the wires. The harness is routed through a u-bolt type flange as well as hangs near several metal parts that, while in motion, rub against the wires causing them to fray. This in turn caused several items to begin to short out and also caused numerous wires to heat up and melt. It was discovered when the drivers side headlight failed and the same side running lights came on and stayed on. …”
NHTSA complaint #11184671, filed 2019-03, 60,000 miles“On 8/10/2024 our sleeper berth hvac fans abruptly quit working. After checking fuses we noticed the fan control switch was hot. After removing the panel that the switch is held in we noticed the HVAC Fan Control switch (Part# 599-5000) was charred, upon removing the switch from the plug we observed the actual plug is melted, and one of the wires on the wire harness has charring of the plastic insulation. This could have very well caught fire. …”
NHTSA complaint #11607883, filed 2024-08“This vehicle about 6-8 weeks ago started throwing codes for all systems above (over 100 codes). This issue affected all systems of the vehicle including but not limited to the speed and braking of the vehicle, plus the fuel system and adaptive driving systems. We took it to the dealer Performance Peterbilt in Tifton, GA. They cleared the codes and said they resolved it by replacing a NOX sensor. We left the repair shop and within 50-100 miles the exact same issue started up again. …”
NHTSA complaint #11624162, filed 2024-11Related recalls
- 21V00N000Dec 29, 2021PACCAR Incorporated (PACCAR) is recalling certain 2016-2022 Peterbilt 567, 579, 2021-2022 Peterbilt 536, 2017-2021 Kenworth T880, 2016-2022 Kenworth T680…Covers: Peterbilt 579 2016–2022, Kenworth T680 2016–2022, Peterbilt 567 2016–2022 +4 more
- 20V130000Mar 4, 2020PACCAR Incorporated (PACCAR) is recalling certain 2015-2020 Peterbilt 365, 389, 567, and 579 vehicles equipped with a left-hand under hood jumper terminal…Covers: Peterbilt 579 2015–2020, 389 2015–2020, 567 2015–2020 +1 more
- 18V092000Feb 2, 2018PACCAR Incorporated (PACCAR) is recalling certain 2017-2018 Kenworth T680 and T880 trucks, and Peterbilt 567 and 579 trucks, all equipped with an automated…Covers: Peterbilt 579 2017–2018, Kenworth T680 2017–2018, Peterbilt 567 2017–2018 +1 more
Related service bulletins
- 11033351May 6, 2026Troubleshooting procedures for 2.1m cab power windows are now available.
- 11032284Apr 1, 2026EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
- 11022487Aug 4, 2025"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…
- 10243354Sep 18, 2023For 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.
- 10232162Feb 10, 2023Fix As Fail â Chassis that were manufactured with certain battery cable routing brackets may experience rubbing or chafing of the battery cables.
- 10227172Nov 7, 202221PBN â LNG/CNG Methane Detecti on System Will Not Warn Operator if System Loses Power â NHTSA ID:21V00N, TC: 2021-793
- 10207154Jan 7, 2022Interim Safety Recall â 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…
- 10203783Nov 9, 2021Non-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…
- 10188467Feb 25, 2021Non-Safety Campaign â The batteries may drain quickly due to the VECU not going to sleep. Updated VECU software is available to resolve the issue.
- 10185190Dec 18, 2020Fix-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.
Electrical system: other model years
Other parts of the 2018 Peterbilt 579
3 complaintsSteering
2 complaintsEngine
1 complaintsOther or unknown
1 complaintsSuspension
1 complaints
← All problems reported for the 2018 Peterbilt 579
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology