2014 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 2014 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
- Brakes125.0%
- Electrical125.0%
- Other / unspecified125.0%
- Powertrain (other)125.0%
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
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2014 PETERBILT CONVENTIONAL 579 TRACTOR. THE CONTACT STATED THAT THERE WAS AN INTERMITTENT FAILURE WITH THE ELECTRICAL SYSTEM PERTAINING TO THE GAUGES, SENSORS, AND THE NAVIGATION SYSTEM. THE MIRROR WAS ALSO VIBRATING AND THE TRANSMISSION FAILED AND MADE A LOUD NOISE. THE CONTACT ALSO STATED THAT THE FRONT AND REAR BRAKES FAILED TO STOP THE VEHICLE SEVERAL TIMES. THE CONTACT HAD TO APPLY FORCE TO THE BRAKES WHILE THE VEHICLE SHOOK VIOLENTLY. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER MORE THAN THREE TIMES FOR SEVERAL REPAIRS, BUT THE FAILURES RECURRED. THE DEALER REPLACED THE FRONT AND REAR BRAKES, THE PASSENGER SIDE MIRROR, THE CHASSIS NODE, AND ADDITIONAL REPAIRS THAT THE CONTACT DOCUMENTED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS NOT AVAILABLE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2014 PETERBILT CONVENTIONAL 579 TRACTOR. THE CONTACT STATED THAT THERE WAS AN INTERMITTENT FAILURE WITH THE ELECTRICAL SYSTEM PERTAINING TO THE GAUGES, SENSORS, AND THE NAVIGATION SYSTEM. THE MIRROR WAS ALSO VIBRATING AND THE TRANSMISSION FAILED AND MADE A LOUD NOISE. THE CONTACT ALSO STATED THAT THE FRONT AND REAR BRAKES FAILED TO STOP THE VEHICLE SEVERAL TIMES. THE CONTACT HAD TO APPLY FORCE TO THE BRAKES WHILE THE VEHICLE SHOOK VIOLENTLY. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER MORE THAN THREE TIMES FOR SEVERAL REPAIRS, BUT THE FAILURES RECURRED. THE DEALER REPLACED THE FRONT AND REAR BRAKES, THE PASSENGER SIDE MIRROR, THE CHASSIS NODE, AND ADDITIONAL REPAIRS THAT THE CONTACT DOCUMENTED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS NOT AVAILABLE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
THE LOCK NUT SYSTEM ON THE LEFT FRONT SPINDLE FAILED. THE LOCK NUT COMPLETELY BACKED OFF OF THE SPINDLE CAUSING THE WHEEL TO FALL OFF.
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
TL* THE CONTACT OWNS A 2014 PETERBILT CONVENTIONAL 579 TRACTOR. THE CONTACT STATED THAT THERE WAS AN INTERMITTENT FAILURE WITH THE ELECTRICAL SYSTEM PERTAINING TO THE GAUGES, SENSORS, AND THE NAVIGATION SYSTEM. THE MIRROR WAS ALSO VIBRATING AND THE TRANSMISSION FAILED AND MADE A LOUD NOISE. THE CONTACT ALSO STATED THAT THE FRONT AND REAR BRAKES FAILED TO STOP THE VEHICLE SEVERAL TIMES. THE CONTACT HAD TO APPLY FORCE TO THE BRAKES WHILE THE VEHICLE SHOOK VIOLENTLY. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER MORE THAN THREE TIMES FOR SEVERAL REPAIRS, BUT THE FAILURES RECURRED. THE DEALER REPLACED THE FRONT AND REAR BRAKES, THE PASSENGER SIDE MIRROR, THE CHASSIS NODE, AND ADDITIONAL REPAIRS THAT THE CONTACT DOCUMENTED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS NOT AVAILABLE.
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 .