What Mack Pioneer PR (4) owners have reported to NHTSA, the service bulletins the manufacturer sent dealers, and any federal defect investigations, by model year. See Mack Pioneer PR (4) safety recalls or check your VIN.
Complaints owners filed with NHTSA, by the model year of the vehicle. A high count can also mean a popular year, so compare it with how many were sold.
| Year | Complaints | Crashes | Fires | Injured | Deaths | TSBs |
|---|---|---|---|---|---|---|
| 2027 | 0 | 0 | 0 | 0 | 0 | 42 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 100 |
| 2025 | 0 | 0 | 0 | 0 | 0 | 155 |
Repair instructions and other communications the manufacturer sent dealers about known issues. A TSB is not a recall, and the repair is usually free only while the car is under warranty; ask your dealer for the bulletin number.
Power Cable Alternator Replacement
Instrument Cluster Going Dark
Diagnostic instructions for CAN network communication issues.
The purpose of this CBR is outline the interim software solution for PR(4) and AN(4).
Jumper Harness Repair for Version 4 Mack Trucks
Loose CCV mounting bolts and oil leak at CCV due to cracking of the housing. Mounting hardware found to be under-torqued after the vehicle was delivered.
The purpose of this CBR is to provide support for complaints of trailer braking aggressively.
The purpose of this CBR is to provide steps on how to utilize the injector widget (within workshop toolbox) to aid with injection system issues.
The purpose of this CBR is to provide steps on how to correct a customer complaint of "Service Required" message for air filter replacement appears in the cluster. There may be no option in PTT or the cluster to reset the air filter service interval.
This CBR solution outlines the procedures for diagnosing, replacing, calibrating, and programming Flexible Switch Panels and the Security and Cab Interface Module (SCIM) to resolve switch malfunction notifications and associated fault codes.
The purpose of this CBR is to provide steps on how to correct a customer complaint of a no crank/engine start condition.
TSB - Wheel Speed Sensor Fitting And Cable Clamping.
Source: NHTSA Office of Defects Investigation public data (complaints, manufacturer communications, investigations), model years 2010 and later. Had a safety problem? Report it to NHTSA.
0 owner complaints are on record with NHTSA.
No. A complaint is an unverified report from an owner. A technical service bulletin (TSB) is the manufacturer telling dealers how to fix a known issue; it is not a safety recall and is usually covered only under warranty. A recall is a formal safety action, and its repair is free.
File a vehicle safety complaint at NHTSA.gov. NHTSA reads every report, and patterns of complaints are what open defect investigations and, eventually, recalls.