- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T880, T800, W900, W990; and 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, and 579 vehicles. The Dana D-Series axle steer arm fasteners that attach the steering arm to the steering knuckle may fail.
- The risk
- Fastener failure can result in a loss of steering control, increasing the risk of a crash or injury.
- The fix
- Dealers will replace and torque the steer arm fasteners, at no charge. Owner notification letters were mailed November 8, 2022. Owners may contact Kenworth customer service at 1-425-828-5888 and Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall are 22 PBB and 22 KWB.
Vehicle safety record
2020 Peterbilt 579 Problems, complaints & recalls
Owners have filed 2 complaints about the 2020 Peterbilt 579 with NHTSA, most often about the driver assistance (2) and the brakes (1). It is covered by 6 recalls, the latest in April 2022 for the critical fasteners. For comparison, the 2019 has 2 and the 2021 has 0.
NHTSA data checked
CAbout as many problems as a typical 579 year, for its age
#280 most complained-about 2020 vehicle
- Complaints
- 2
- Recalls
- 6
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Most common 2020 Peterbilt 579 problems
Share of all 2 complaints. One complaint can name more than one area. Tap an area for its complaints and recalls.
2020 Peterbilt 579 recalls 6
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2016-2022 Peterbilt 567, 579, 2021-2022 Peterbilt 536, 2017-2021 Kenworth T880, 2016-2022 Kenworth T680, 2018-2020 Kenworth T440, 2020 Kenworth T270, and 2021 Kenworth T280 vehicles. The methane detection system will not function if the system loses power.
- The risk
- The operator may be unaware of a system malfunction or the presence of excessive methane levels, increasing the risk of injury or fire.
- The fix
- Dealers will re-wire the warning alarm, free of charge. Owner notification letters were mailed December 1, 2022. Owners may contact Peterbilt customer service at 1-940-591-4220, and Kenworth customer service at 1-425-828-5888. PACCAR's numbers for this recall are 21KWH and 21PBN.
- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2019-2022 Kenworth T880, W990, Peterbilt 567, 579, 389, and 2022 Peterbilt 536, 537 wrecker and auto hauler vehicles. The work brake (winch brake) may unintentionally disengage the service brakes during winching operations, causing the vehicle to roll.
- The risk
- Unintended vehicle movement can increase the risk of a crash or injury.
- The fix
- Dealers will update the vehicle software, free of charge. Owner notification letters were mailed on January 3, 2022. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth); or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWG and 21PBM.
- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2015-2020 Peterbilt 365, 389, 567, and 579 vehicles equipped with a left-hand under hood jumper terminal (option code 2539410). The positive battery jumper terminal cable may be too long, allowing it to chafe against the left front suspension spring and result in an electrical short circuit.
- The risk
- An electrical short circuit can increase the risk of a fire.
- The fix
- PACCAR will notify owners, and dealers will inspect the battery jumper terminal cables, and replace them as necessary, free of charge. The recall began April 30, 2020. Owners may contact PACCAR customer service at 1-940-591-4220. PACCAR's number for this recall is 20PBA.
- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2020 Peterbilt 579 vehicles equipped with a sleeper box. The conspicuity tape may have been installed in the incorrect location, affecting the vehicle's visibility to other drivers on the road. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
- The risk
- Reduced visibility increases the risk of a crash.
- The fix
- PACCAR will notify owners, and dealers will install additional conspicuity tape on back of sleeper in correct location, free of charge. The recall began November 4, 2019. Owners may contact PACCAR customer service at 1-940-591-4220. PACCAR's number for this recall is 19PBE.
- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2020 Peterbilt 520 and 579 vehicles and Kenworth T680, T880 and W990 vehicles. The mirror glass may detach from the mirror carrier plate due to inadequate adhesion.
- The risk
- If the mirror glass detaches, the driver may have reduced visibility and the mirror glass will become a road hazard that may strike another vehicle or pedestrian, increasing the risk of a crash or injury.
- The fix
- PACCAR has notified owners, and dealers will inspect the upper mirror glass/mirror carrier, replacing it as necessary, free of charge. The recall began May 31, 2019. Kenworth owners may contact PACCAR customer service at 1-425-828-5888 and Peterbilt owners may call 1-940-591-4220. PACCAR's numbers for this recall is 19KWC and 19PBC.
What owners say
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2 complaints about the 2020 Peterbilt 579
Newest first, as filed with NHTSA by owners.
Vehicle has a following distance sensor on front bumper. Sensor is sensing overpasses when traveling underneath them and that should not be detected. Vehicle is automatically applying hard braking. This is causing a possible rear end collision and or loss of vehicle controll in wet conditions.
Eoa support bracket broke off and the eoa manifold fell into the drive shaft causing the loss of air pressure. The truck was on the instate in the city.
Peterbilt 579: every year compared
All 579 years2020 Peterbilt 579 vs rivals
| Vehicle | Complaints | Recalls | Grade | |
|---|---|---|---|---|
| 2020 Peterbilt 579 | 2 | 6 | C | |
| 2020 Peterbilt 520 | 3 | 12 | F | Compare |
| 2020 Peterbilt 330 | 1 | 1 | C | Compare |
| 2020 Peterbilt 365 | 1 | 4 | C | Compare |
More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.
Questions about the 2020 Peterbilt 579
Does the 2020 Peterbilt 579 have any recalls?
Yes - NHTSA lists 6 recalls for the 2020 Peterbilt 579: critical fasteners (April 2022); wiring (December 2021); service brakes, air (November 2021); cables (March 2020) and more. Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
What are the most common problems with the 2020 Peterbilt 579?
By the complaints owners filed with NHTSA, the most common problem areas are the driver assistance (2), brakes (1).
How many complaints has the 2020 Peterbilt 579 had?
2 complaints have been filed with NHTSA, the first on September 22, 2020 and the latest on December 19, 2023. Of these, 0 describe a crash and 0 a fire, and together they report 0 injuries and 0 deaths.
Is the 2020 Peterbilt 579 a reliable vehicle?
Its Safety Index is 57 out of 100 (grade C: about as many problems as a typical Peterbilt 579 year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
Which Peterbilt 579 years have the most complaints?
2022 (7), 2018 (6), 2023 (4). See every Peterbilt 579 year compared.
What should I do if my 2020 Peterbilt 579 has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data