AI Damage2019 Peterbilt 520: common problems
The maker issued 31 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 31
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 7 |
| Service brakes | 0 | 0 | 6 |
| Equipment | 0 | 0 | 5 |
| Engine | 0 | 0 | 4 |
| Engine and cooling | 0 | 0 | 4 |
| Powertrain | 0 | 0 | 3 |
| Fuel system | 0 | 0 | 2 |
| Structure | 0 | 0 | 2 |
| Visibility | 0 | 0 | 2 |
| Electronic stability control | 0 | 0 | 1 |
| Parking brake | 0 | 0 | 1 |
| Steering | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- "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…
- EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24…
- 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…
- Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting…
Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system…
- 7/700 Service Agreement - Letter Only
- Fix As Fail The height control valve (HCV) rod on vehicles with low air leaf suspensions is prone to…
Fix As Fail The height control valve (HCV) rod on vehicles with low air leaf suspensions is prone to toggling over center during rough road conditions. With full suspension articulation, HCV bracket flexes and toggles…
- Quality and Volume Validation vehicles built for the 520 VMUX program between July 2019 and December 2020…
Quality and Volume Validation vehicles built for the 520 VMUX program between July 2019 and December 2020 are eligible for a retrofit of the digital display to a production intent unit that features updated base…
- Certain Engine Model Year 2018 PACCAR MX-11 engines must have the crankcase pressure sensor replaced due…
Certain Engine Model Year 2018 PACCAR MX-11 engines must have the crankcase pressure sensor replaced due to contamination during assembly.
- Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis…
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the…
- The service information for Bendix Air Dryer maintenance is being updated to include new procedures
- Info Only â Certain 520 model chassis built between 2014 and 2021, and equipped with the Red Dot HVAC…
Info Only â Certain 520 model chassis built between 2014 and 2021, and equipped with the Red Dot HVAC system, may have service port spacing which will not allow the connection of a pressure gauge to both the high and…
- Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet…
Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis…
NHTSA lists 31 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2019 Peterbilt 520?
There are no owner complaints in the NHTSA data for this year; the data comes from 31 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2019 Peterbilt 520?
NHTSA lists 31 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2019 Peterbilt 520 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2019 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.