NHTSA recall 23V423000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 23V423000 |
| Manufacturer's number | 23PBD |
| Manufacturer | PACCAR Incorporated |
| Reported | 2023-06-13 |
| Owners notified | 2023-07-13 |
| Component | ELECTRICAL SYSTEM |
| Units potentially affected | 4967 |
| Part numbers | See manufacturer comments section |
| Report | Annual report 1, for 2025 quarter 3 to 2026 quarter 2 |
|---|---|
| Filed with NHTSA | 2026-07-28 |
| Vehicles in the campaign | 4967 |
| Reported remedied | 4491 (90%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2026 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
PACCAR, Incorporated (PACCAR) is recalling certain 2021-2023 Peterbilt 579 vehicles equipped with MX-13 engines and 160-amp alternators. A fastener on the front spring bracket may have been installed with the head on the outside of the frame rail, which can chafe and damage the alternator positive cable.
What can happen
A damaged alternator cable increases the risk of a fire.
The remedy
Dealers will replace the frame fastener and secure the alternator cable, free of charge. Owner notification letters are expected to be mailed August 11, 2023. Owners may contact Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 23PBD.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
| 2021 PETERBILT 579 | |
|---|---|
| 2022 PETERBILT 579 | |
| 2023 PETERBILT 579 |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| 46-020 | 2026-07-23. Service bulletin. Certain unaffected chassis have been removed from the chassis population. |
|---|---|
| 43-080 | 2026-06-17. Service bulletin. "KW: A new recommended repair has been added to verify the software level and close the campaign in SIR.The repair procedure has been updated with additional note boxes for clear instructions. PB: The repair procedure has been updated with additional note boxes for clear instructions." |
| R2103 | 2026-06-17. Service bulletin. Updated the point of contact for sourcing the MX Engine Overlay Harness Kits. This retrofit should have been completed by 5/15/2022 per the Action section of the bulletin. However, trucks still open in SIR are still eligible for the repairs. |
| R2601 | 2026-06-04. Service bulletin. Updated primary and/or secondary chassis modules for certain pre-production Kenworth chassis are now available for installation. |
| 02-177 | 2026-06-03. Service bulletin. Troubleshooting procedures for 2.1m cab power windows are now available. |
| E326 | 2026-05-06. Emissions. EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines. |
| 24PBE_KWE | 2026-03-05. Service bulletin. The Parts section has been updated to clarify that freight charges for safety recall orders should not be passed on to the end customer. |
| 24PBE | 2025-12-05. Service campaign. The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “!” next to DNR/DNRP indicator, “-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle. |
| 98-030 | 2025-06-05. Service bulletin. 5/29/2025: A new Ethernet Multiplexed Architecture (EMUX) Service Tool Kit service manual (SM034-022) has been released to provide general use information. The new EMUX Service Tool Kit improves cab & chassis electrical troubleshooting efficiency, while reducing risk of component damage. 4/29/2025: The Ethernet Multiplexed Architecture (EMUX) Service Tool Kit and individual kit components are now available to order. Dealers that have received their first kit may order an additional kit. The EMUX Service Tool Kit Part number has been updated to match OEM drawings (P74-1045-001). Individual kit component part numbers can be found in the Reference Bill of Materials sheet. The new EMUX Service Tool Kit improves cab & chassis electrical troubleshooting efficiency, while reducing risk of component damage. Information Only New diagnostic tool is required to support PACCAR Ethernet Multiplexed Architecture (EMUX). The EMUX Service Tool Kit will help improve cab & chassis electrical troubleshooting efficiency, while reducing the risk of component damage. |
| 25PBC | 2025-05-06. Service bulletin. Safety Recall – Interim Notification Certain Battery Electric Vehicle (BEV) chassis equipped with certain Accelera High Voltage Interlock Loop (HVIL)circuit configurations may experience a sudden loss of high voltage power with unintended opening of electrical contactors, which may occur without warning. This can result in a loss of propulsion and may increase the risk of a crash. This bulletin will be updated once parts and procedures are available. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.