2017 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 2017 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
- Brakes150.0%
- Tires & wheels150.0%
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
VEHICLE INVOLVED IN WHEEL END FIRE THAT DESTROYED THE ATTACHED TRAILER AND LOAD. DAMAGE TO TRACTOR WAS CONTAINED TO THE REAR CHASSIS AND BACKSIDE OF THE CAB. VEHICLE WAS IN MOTION ON INTERSTATE HIGHWAY WHEN THE DRIVER SAW SMOKE COMING FROM THE TRACTOR DRIVE WHEELS. TIRE BLEW SOON AFTER AND FIRE COULD NOT BE EXTINGUISHED BY ON BOARD FIRE EXTINGUISHER. THE FIRE PREVENTED ACCESS TO FIFTH WHEEL RELEASE. DRIVER WAS UNABLE TO SEPARATE TRAILER FROM TRACTOR TO PREVENT FURTHER DAMAGE AND LOAD LOSS. TOTAL DAMAGES IN EXCESS OF $250K FORMAL FIRE INVESTIGATION AT STORAGE LOT AND SUBSEQUENT LAB INSPECTIONS CONCLUDED THAT A HALDEX 3030 GOLDSEAL CHAMBER TO BE THE ROOT CAUSE. THE PARKING SPRING HAD FAILED AND PUNCTURED PARKING SIDE DIAPHRAGM. THE SUBSEQUENT LEAK CAUSED PARKING BRAKES TO PARTIALLY APPLY WHILE VEHICLE WAS MOVING. THE PRIVATE FIRE INVESTIGATION FIRM HIRED BY THE FLEET PROVIDED X-RAYS SHOWING THE SPRING FAILURE PRIOR TO DISASSEMBLY. THIS FLEET HAS DOCUMENTED NUMEROUS HALDEX GOLDSEAL 3030 CHAMBER FAILURES ON ITS OTHER SAME YEAR,MAKE MODEL TRACTORS. FAILURES ARE OCCURRING AT ABNORMALLY HIGH RATES AND WITHIN THE FIRST 2 YEARS FROM DATE OF IN-SERVICE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
Unit 1 towing Unit 2 was traveling eastbound in the inside lane of IH-20. Unit 1 suffered a tire failure resulting in a blowout of the front left steering tire. Unit 1 towing Unit 2 steered towards the center median striking the guardrail and the concrete overpass barrier. Unit 1 and towed Unit 2 then rolled one-quarter roll right-over-left. Unit 1 and Unit 2 became engulfed in flames. Unit 1 came to rest in the center median, facing east, resting on the left/ driver side, with significant burn damage and not drivable. Unit 2 remained coupled to Unit 1 and came to rest in the center median, facing east, resting on the left side with significant burn damage and not towable. The driver of Unit 1 suffered severe, non-life-threatening injuries. Unit 1 Contributing Factor 98 (OTHER): Unit 1's leading contributing factor was found to be a tire blowout of the front left steering tire New Tire-61721-Jul25 Yokohama :RY617 Size:295/75R22.5 Ply:16 New Tire-51731-Jul25 Yokohama :TY517MC2 Size:295/75R22.5 Ply:16
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 .