AutoStatsIQ
Data through Oct 2026
Model yearDo not drive

2025 Peterbilt 520

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recalls (7)Complaints (0)Investigations (0)Bulletins (61)
Recall campaigns covering this model year7331k vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2025 Peterbilt 520 by year filed

Owner complaints about this model year, by the year they were filed with NHTSA.

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Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

Complaints by component

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

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Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

7 recall campaigns cover the 2025 Peterbilt 520

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2025 Peterbilt 520
CampaignFiledSubjectComponentVehiclesRemedy
26V-022Jan 19, 2026Right-hand stand-up (RHSU) configuration on the steering cross-shaft may become stressed and failSteering219Part replacement
25V-436Jun 26, 2025Tail brake light, upper and lower beam headlights, reverse light, and turn signal may not illuminate as intendedLighting56,260Software update
25V-181Mar 24, 2025High voltage (HV) contactors may open, causing a sudden loss of high voltage and a loss of drive powerElectrical system238Software update
24V-915Dec 9, 2024Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioningElectrical system220,764Software update
24V-908Dec 3, 2024Steering arm and/or tie rod bracket fasteners may fail, resulting in a loss of steering controlSteering68Repair or modification
24V-433Jun 12, 2024Tie rod or drag link assembly may contain an improperly heat-treated ball stud, causing the ball stud to breakDo not driveSteering7,410Part replacement
24V-044Jan 25, 2024Steering gear assemblies may have been assembled incorrectly with fewer recirculating balls than are required, which may result in a loss of…Steering45,887Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2025 Peterbilt 520

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    NHTSA has not opened an investigation on this model year

    Source: NHTSA ODI investigations file.
    All investigations
    Service bulletins

    61 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.

    • P001 Sep 11, 2026 · Service Bulletin/Repair Instructions
      "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
    • P001 Sep 3, 2026 · Service Bulletin/Repair Instructions
      "KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total c…
    • P002 Sep 3, 2026 · Service Bulletin/Repair Instructions
      "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 2 chassis. The total chassis count is now 4. A link to the PACCAR Powertrain Prognostics Webcast has been added i…
    • P002 Aug 27, 2026 · Service Bulletin/Repair Instructions
      "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 2 chassis. The total chassis count is now 4. A link to the PACCAR Powertrain Prognostics Webcast has been added i…
    • P001 Aug 27, 2026 · Service Bulletin/Repair Instructions
      "KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total c…
    • 43-089 Aug 21, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available after 08/28/2026.
    • P001 Aug 19, 2026 · Service Bulletin/Repair Instructions
      "PB: The chassis list has been updated to include 11 chassis. The total chassis count is now 122. KW: The chassis list has been updated to include 3 chassis. The total chassis count is now 52."
    • P001 Aug 13, 2026 · Service Bulletin/Repair Instructions
      "KW -The chassis list has been updated to include 2 chassis. Total chassis count is now 49. PB - The chassis list has been updated to include10 chassis. The total chassis count is now 111."
    • 24KWC/24PBC Aug 13, 2026 · Service Bulletin/Repair Instructions
      Updated Sheppard Steering Gear Classification Tool link in Inspection Procedure
    • P001 Aug 13, 2026 · Service Bulletin/Repair Instructions
      Chassis list has been updated to include 10 chassis. The total chassis count is now 101.
    • 43-089 Aug 13, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available in late August 2026 for chassis equipped with EPA 2024 EMY 2024-2026 PACCAR MX-11 and MX-13 engines. This bulletin will be updated when the software is ready. This update provides customers with addi…
    • 43-089 Aug 13, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available in late August 2026 for chassis equipped with EPA 2024 EMY 2024-2026 PACCAR MX-11 and MX-13 engines. This bulletin will be updated when the software is ready. This update provides customers with addi…
    • 24KWL/PBL Aug 13, 2026 · Service Bulletin/Repair Instructions
      The verbiage in the Introduction section has been updated.
    • 46-029 Aug 13, 2026 · Service Bulletin/Repair Instructions
      When DAVIE version 26.21.2 is used to update the VECU3 to software version 3.4.46.0, the VECU3 5071 component group may display as --- after programming.
    • 43-088 Aug 13, 2026 · Service Bulletin/Repair Instructions
      The procedure has been updated to include additional steps for verifying the software level on the vehicle electronic control unit (VECU2) and digital display (DD). Steps have also been added to the PACCAR Common Rail Injection 2 (PCI2) software verification.
    • 43-089 Aug 1, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available on 08/07/26 for chassis equipped with EPA 2024 EMY 2024-2026 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks before a DEF-related derate oc…
    • 46-020 Jul 22, 2026 · Service Bulletin/Repair Instructions
      Certain unaffected chassis have been removed from the chassis population.
    • 43-088 Jul 21, 2026 · Service Bulletin/Repair Instructions
      This optional software update is now available for chassis equipped with EMY 2021B-2023 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks before a DEF-related derate occurs. The software is being off…
    • 43-089 Jul 21, 2026 · Service Bulletin/Repair Instructions
      An optional software update is expected to be available on or after 07/31/26 for chassis equipped with EPA 2024 engine model year (EMY) 2024-2026 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks bef…
    • E318 Jul 10, 2026 · Service Bulletin/Repair Instructions
      The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage. The Warranty section has also been updated to include Peterbilt specific SRT codes for filing cross-divi…
    • 43-088 Jul 7, 2026 · Service Bulletin/Repair Instructions
      "The software is not yet available. The bulletin will be updated when more information is available."
    • 26PACB Jul 2, 2026 · Service Campaign
      "(KW): Certain Kenworth K270 and K370 Battery Electric Vehicle (BEV) chassis equipped with certain DANA cradle harnesses may intermittently lose electrical continuity at one or more C40 connector pins. This can occur without warning and cause loss of propul…
    • 25KWD 25PBD Jul 2, 2026 · Service Campaign
      Additional US chassis have been added, along with additional Canadian chassis under identical safety recall 26PACB.
    • P001 Jun 30, 2026 · Service Campaign
      Leveraging PACCAR’s advanced Prognostic prediction algorithms, certain PACCAR MX-11 and MX-13 EMY 2024-2026 engines will receive proactive replacement instructions for the PM sensor to maximize uptime and maintain optimal performance.
    • 43-088 Jun 29, 2026 · Service Bulletin/Repair Instructions
      "An optional software update will be available on 07/06/2026 for chassis equipped with EMY 2021B-2023PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service theirtrucks before a DEF-related derate occurs. The software …
    • 43-080 Jun 3, 2026 · Service Bulletin/Repair Instructions
      "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 …
    • 26PACA May 20, 2026 · Service Bulletin/Repair Instructions
      ​Updated cross shaft and bearing installation steps have been added to the repair procedures.
    • 99-051 May 18, 2026 · Emissions
      There is an update to the CARB Base Emissions Warranty Limits table and Manufacturer’s Warranty Coverage section in certain Engine Model Year (EMY) 2025 MX-11 and MX-13 Operator’s Manuals.
    • 46-028 May 14, 2026 · Service Campaign
      Certain Peterbilt Model 520 BEV chassis with an Accelera Power Control and Accessory System (PCAS) were manufactured without a check valve in the power steering system.
    • E338 Apr 30, 2026 · Service Campaign
      Certain EPA21 PACCAR MX engines are equipped with PHINIA fuel injectors that do not meet PHINIA’s manufacturing specifications.
    • E326 Apr 1, 2026 · Emissions
      EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
    • 15-034 Feb 13, 2026 · Service Campaign
      Battery Electric Vehicle (BEV) de-energizing and re-energizing procedures have been added to the bulletin for Peterbilt Model 520 BEV.
    • 46-024 Jan 30, 2026 · Service Bulletin/Repair Instructions
      CARB Label Procedure Update The repair procedure removes the aftermarket change request, adds GHG label inspection, and directs dealers to open a TCS365 case to order new labels. Warranty codes for inspection and label replacement have been updated. Cert…
    • 25PACF Dec 23, 2025 · Service Bulletin/Repair Instructions
      Parts and procedures are now available for all affected chassis equipped with Vehicle Electronic Control Unit (VECU) part number Q21-1157-013-011 / Q21-1157-013-013 / Q21-1157-002-002 / Q21-1157-004-004 / Q21-1157-006-006 / Q21-1157-009-009. See attached Pa…
    • 46-024 Dec 31, 2025 · Service Bulletin/Repair Instructions
      Certain Battery Electric Vehicles that are subject to California Air Resources Board (CARB) regulations have Vehicle Emissions Control Information (VECI) labels that are missing the CARB Enhanced EV and FCEV Statement.
    • 15-034 Dec 23, 2025 · Service Bulletin/Repair Instructions
      Certain Kenworth L770 and Peterbilt Model 520 chassis may encounter a slight increase in effort in the right-hand steering shaft when turning the wheel.
    • 46-019 Nov 4, 2025 · Service Bulletin/Repair Instructions
      Repair procedures and warranty information for model 520EV are now available. Certain Peterbilt 579EV and 520EV chassis have the First Responder Guide (FRG) label incorrectly showing the cut loop on the wrong side and are missing the Low Voltage Battery Dis…
    • 01-090 Nov 4, 2025 · Service Bulletin/Repair Instructions
      Repair procedures and warranty information for model 520EV are now available. The cab heater coolant system on Peterbilt 579EV and 520EV models may not deaerate properly, causing pump malfunctions and inadequate cab heating. Update coolant deaeration return…
    • R2405 Oct 7, 2025 · Service Bulletin/Repair Instructions
      All parts necessary to complete Phase 2 of this bulletin are now available. This retrofit provides certain chassis equipped with Cummins X15N (Natural Gas) engines with production level parts to replace preproduction parts installed at the time of manufacture.
    • 25PACF Aug 1, 2025 · Service Campaign
      Procedures are now available for Phase 1 chassis equipped with Internal Combustion Engines (ICE) and Vehicle Electronic Control Unit (VECU) part number Q21-1157-013-011 / Q21-1157-013-013. Parts and procedures for Phase 2 chassis will be available at a late…
    • CE033 Jul 3, 2025 · Warranty Program/Extension
      32 fuel injector part numbers (16 for MX-11 and 16 for MX-13) have been added to this warranty policy.
    • E323 Jul 2, 2025 · Service Bulletin/Repair Instructions
      A required spacer tool set is now available to streamline the injector replacement process. The spacer tool set allows certain fuel system components to be loosened instead of removed to provide access to the injectors. See Bulletin 98-031 for details. Tool…
    • R2306 - PB Jul 1, 2025 · Service Bulletin/Repair Instructions
      All EMUX retrofit procedures updated to make it clear that the VECU3 must have software updated and vehicle mileage confirmed correct before updating the Digital Display. Parts and Procedure section also updated to include the Vehicle Emissions Control Info…
    • E318 Jun 7, 2025 · Service Bulletin/Repair Instructions
      Newly designed fuel injectors are available for EPA2021 compliant PACCAR MX-series engines to optimize engine performance. Injectors must be replaced as a full set (6 injectors) and associated software must be updated at the same time.
    • 98-030 May 31, 2025 · Service Bulletin/Repair Instructions
      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 red…
    • 25PBC Apr 8, 2025 · Service Bulletin/Repair Instructions
      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 electri…
    • 46-016 Apr 30, 2025 · Service Campaign
      4/29/2025: Campaign A software update is available for 520EV and 579EV Battery Electric Vehicles. This software update corrects or improves certain functions. Software update procedures have been revised. Campaign start date is 12/05/2024. Campaign A sof…
    • 25PBC Apr 30, 2025 · Service Bulletin/Repair Instructions
      Certain Peterbilt 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 contractors, which may …
    • R2405 - PB Apr 19, 2025 · Service Bulletin/Repair Instructions
      Due to parts availability issues, this bulletin will be divided into 2 phases. Phase 1 will enable these chassis to be brought into emissions compliancebefore 06/30/2025 to avoid fi nes and penalties. Phase 2 will include all parts that are not currently av…
    • 43-080 PB Mar 26, 2025 · Service Campaign
      As of 03/25/2025, this campaign has resumed. Software updates are now available to complete this campaign.
    • E327 Feb 27, 2025 · Emissions
      "Vehicles equipped with PACCAR MX engines with Engine Software Version NA202 or NA206 may display a dash STOP lamp incorrectly. PCI-2 software on these chassis must be reverted from NA202 to NA201 (Pack 2 injectors) or from NA206 to NA191 (Pack 1 injectors…
    • 24PBK Jan 17, 2025 · Service Bulletin/Repair Instructions
      Safety Recall Specific 2024 Peterbilt Model 367, 389, 548, and 2024-2025 520 and 567 chassis equipped with a PACCAR 20k Steer Axle have been identified as having steering arm and/or tie rod arm fasteners that may be improperly torqued and can be at risk of …
    • 24PBL Jan 10, 2025 · Service Bulletin/Repair Instructions
      Safety Recall Updated software and procedures are now available. Certain Vehicle Model Year 2021-2025 Peterbilt chassis configured for trailer towing require a software update for the Bendix EC80 ABS ECU. Software update procedures for certain Battery-Elect…
    • 24PBK Dec 13, 2024 · Service Bulletin/Repair Instructions
      Interim Safety Recall Specific 2024 Peterbilt model 367, 389, 548, and 2024-2025 Peterbilt 520 and 567 chassis equipped with a PACCAR 20k Steer Axle have been identified as having steer arm and/or tie rod arm fasteners that may be improperly torqued and ca…
    • R2306 - PB Nov 9, 2024 · Service Bulletin/Repair Instructions
      TCS case requirements for EMUX software and PACCAR MX Pack 2 injector upfit have been removed. Software has been campaigned for both processes, and software assistance is no longer required. All EMUX jumper harness retrofit procedures have been updated to i…
    • 46-011 Nov 27, 2024 · Service Bulletin/Repair Instructions
      Some 579EV and 520EV BEV trucks may have loose or improperly torqued ESS gland nuts. This may cause an intermittent warning light on the dash display.
    • E290 Sep 24, 2024 · Service Bulletin/Repair Instructions
      FIX-AS-FAIL Updated to include EPA2024 compliant engines. Fuel Filters must be changed before first cleaning. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Discard any previous versions of E2…
    • 98-030 Sep 14, 2024 · Service Campaign
      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.
    • 46-001 HVAC Update Aug 2, 2024 · Other
      BEV Phase 2 tools have been added to the BEV required tools lists.
    • E307 Apr 19, 2024 · Service Bulletin/Repair Instructions
      CARB Emission s Manufacturer Warranty term and/or kilometers conversion displayed in certain EMY 2022-2023 PX-7 or PX-9 Operatorâ™s Manuals are incorrect.
    Source: NHTSA manufacturer communications files.
    About service bulletins