CarRecallWatchThe 2021 Peterbilt 579 has 9 safety recalls on file with NHTSA.
Owners have filed 1 complaint with NHTSA.
The most-reported problem area is Electrical System (1 report).
2021 Peterbilt 579 recalls
Braking and stability systems may fail, raising crash risk
The electronic control unit (ECU) that runs the anti-lock brakes, traction control, electronic stability control, active cruise control and collision mitigation system can receive electrical noise or a weak signal.
Gear Shifter Connection Can Fail, Disabling Truck After Stop
A right-hand gear shifter stalk connector may have been improperly crimped, which can cause a loss of communication between the gear shifter and the transmission.
Fuel Tank Can Be Worn Through, Creating Fire Risk
Certain 2021-2024 Peterbilt 567 and 579 trucks may have U-bolts holding the air tank to the chassis that can contact the diesel fuel tank.
Damaged Alternator Cable Can Cause Fire
A fastener on the front spring bracket may have been installed with its head on the outside of the frame rail.
Methane alarm may fail if power is lost, risking fire
Certain heavy-duty trucks have a wiring defect in the methane detection system.
Brakes May Release During Winching, Causing Rollaway
On certain heavy-duty wrecker and auto hauler trucks, the work brake used during winching can unintentionally disengage the service brakes.
Rear brakes may lose signal and reduce stopping power
The Hill Start Assist valve assembly, mounted on a cross member, may not have enough clearance from the rear axle.
Air Brake Springs May Fail, Risking Loss of Braking
Some 2021 heavy trucks have air brake spring brake chambers that may have been assembled with springs outside specification.
Engine Flywheel Can Detach, Causing Power Loss
The capscrews attaching the flywheel to the crankshaft may have been improperly torqued, so the flywheel can come loose from the engine.
Most common 2021 Peterbilt 579 problems
Problem areas named in the 1 complaints owners filed with NHTSA.
| Problem area | Reports |
|---|---|
| Electrical System | 1 |
What owners report
I was driving on a freeway when suddenly my truck lost all power. I managed to coast to a safe spot to park. I immediately opened hood and started troubleshooting. Left key on so I'd know if power came back on. After about 10 minutes of moving wires gently I found the issue. A power wire plug connected to cab. I wiggled it and everything worked again. Messed up again and again, that day. Vehicle was still warrantied, but shops didn't have time to get it in. Finally I found a temporary solution. If I hold wire sideways after cutting zip ties it wouldn't mess up again. Shop said they must replace entire wire. Totally a safety issue. Could have resulted in bad
2021 Peterbilt 579 questions
Does the 2021 Peterbilt 579 have any recalls?
Yes. NHTSA lists 9 safety recalls for the 2021 Peterbilt 579: Braking and stability systems may fail, raising crash risk; Gear Shifter Connection Can Fail, Disabling Truck After Stop; Fuel Tank Can Be Worn Through, Creating Fire Risk; Damaged Alternator Cable Can Cause Fire; Methane alarm may fail if power is lost, risking fire. Recall repairs are normally free at an authorized dealer.
What are the most common problems with the 2021 Peterbilt 579?
Based on 1 owner complaint filed with NHTSA, the most-reported problem areas are Electrical System (1).
How do I check if a recall on my 2021 Peterbilt 579 has been fixed?
Enter your 17-character VIN in our VIN recall check. It shows open recalls that have not been repaired on your specific vehicle. Recall repairs are normally free at an authorized dealer.