2015 Peterbilt 579 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2015 Peterbilt 579, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical120.0%
- Engine120.0%
- Fuel system120.0%
- Powertrain (other)120.0%
- Suspension120.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
DRIVER WAS DRIVING AND TRUCK JUST SHUT OFF, FORCING HIM TO SIDE OF ROAD, HAD TO GET TOWED DUE TO FACT THAT COULD NOT REPAIR. AT DEALER I AM TOLD FUEL PUMP LEAKED INTO ELECTRICAL HARNESS AND ECM. CAUSING TRUCK TO SHUT DOWN AND NOT START.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
DRIVER WAS DRIVING AND TRUCK JUST SHUT OFF, FORCING HIM TO SIDE OF ROAD, HAD TO GET TOWED DUE TO FACT THAT COULD NOT REPAIR. AT DEALER I AM TOLD FUEL PUMP LEAKED INTO ELECTRICAL HARNESS AND ECM. CAUSING TRUCK TO SHUT DOWN AND NOT START.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
DRIVER WAS DRIVING AND TRUCK JUST SHUT OFF, FORCING HIM TO SIDE OF ROAD, HAD TO GET TOWED DUE TO FACT THAT COULD NOT REPAIR. AT DEALER I AM TOLD FUEL PUMP LEAKED INTO ELECTRICAL HARNESS AND ECM. CAUSING TRUCK TO SHUT DOWN AND NOT START.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
LEAKING FITTINGS ON TRANSMISSION COOLER CAUSED FLUID TO RUN OUT AND SEIZED TRANSMISSION, WHILE DRIVER WAS IN MOTION ON HIGHWAY, DUE TO BAD INSTALLATION AT FACTORY. UPON INSPECTION FOUND 3 OUT OF 5 TRUCKS WITH SAME PROBLEM. WARRANTY COVERAGE WAS DENIED BY EATON AND PETERBILT CLAIMING DRIVER ERROR.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2015 PETERBILT 579. WHILE DRIVING 55 MPH, THE DRIVER NOTICED SMOKE COMING FROM THE PASSENGER SIDE OF THE VEHICLE. UPON FURTHER INSPECTION, THE DRIVER NOTICED THAT THE FRONT PASSENGER SIDE AXLE WAS ON FIRE. THE DRIVER WAS ABLE TO EXTINGUISH THE FIRE. IN ADDITION, THE BRAKE PEDAL WAS DEPRESSED BUT FAILED TO RESPOND. THE CONTACT DID NOT DISCLOSE IF A POLICE REPORT WAS FILED. THERE WERE NO INJURIES. THE VEHICLE WAS TOWED TO A DEALER BUT WAS NOT DIAGNOSED OR REPAIRED. IN ADDITION, THE FAILURE RECURRED AND BOTH FRONT AXLES CAUGHT FIRE. THE FIRE WAS EXTINGUISHED. THE VEHICLE WAS TOWED AGAIN TO A DEALER BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS 43,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .