Mack Pioneer PR (4) recalls
NHTSA's records list 10 safety recalls covering the Mack Pioneer PR (4) since Nov. 1, 2016, for model years 2025-2027. The most recent was reported to NHTSA on Oct. 1, 2026. 1 of them carried a “Do not drive” or “Park outside” warning.
Built by the Tribune's code from NHTSA's official records. No AI wrote this page. Updated Nov. 8, 2026.
NHTSA's VIN lookup shows whether a specific vehicle has an open recall. Check a vehicle by its VIN at NHTSA
2027 Mack Pioneer PR (4) recalls 6
- Intake and Grille Bezels May Detach
Component: structure. 3,096 vehicles potentially affected.
- Software Calculation Error May Cause Reduced Braking Performance
Component: service brakes, electric. 850 vehicles potentially affected.
- Marker Lights May Fail to Illuminate/FMVSS 108
Component: exterior lighting. 513 vehicles potentially affected.
- Do Not Drive: Wheel May Detach
Component: wheels. 644 vehicles potentially affected.
- Rear Brake Modulators May Short Circuit
Component: service brakes, air. 2,772 vehicles potentially affected.
- Turn Signal Failure/FMVSS 108
Component: exterior lighting. 86 vehicles potentially affected.
2026 Mack Pioneer PR (4) recalls 9
- Intake and Grille Bezels May Detach
Component: structure. 3,096 vehicles potentially affected.
- Software Calculation Error May Cause Reduced Braking Performance
Component: service brakes, electric. 850 vehicles potentially affected.
- Do Not Drive: Wheel May Detach
Component: wheels. 644 vehicles potentially affected.
- Rear Brake Modulators May Short Circuit
Component: service brakes, air. 2,772 vehicles potentially affected.
- Turn Signal Failure/FMVSS 108
Component: exterior lighting. 86 vehicles potentially affected.
- High Beams May Not Automatically Switch to Low Beams/FMVSS 108
Component: exterior lighting. 247 vehicles potentially affected.
- Load Lock Clamps May Fail
Component: equipment. 46 vehicles potentially affected.
- Inoperative Trailer Lighting
Component: exterior lighting. 156 vehicles potentially affected. Links to NHTSA's record.
- Loss of Steering Control
Component: steering. 32 vehicles potentially affected. Links to NHTSA's record.
2025 Mack Pioneer PR (4) recalls 7
- Intake and Grille Bezels May Detach
Component: structure. 3,096 vehicles potentially affected.
- Rear Brake Modulators May Short Circuit
Component: service brakes, air. 2,772 vehicles potentially affected.
- Turn Signal Failure/FMVSS 108
Component: exterior lighting. 86 vehicles potentially affected.
- High Beams May Not Automatically Switch to Low Beams/FMVSS 108
Component: exterior lighting. 247 vehicles potentially affected.
- Load Lock Clamps May Fail
Component: equipment. 46 vehicles potentially affected.
- Inoperative Trailer Lighting
Component: exterior lighting. 156 vehicles potentially affected. Links to NHTSA's record.
- Loss of Steering Control
Component: steering. 32 vehicles potentially affected. Links to NHTSA's record.
Counted and listed by the Tribune's code from NHTSA's recall records. A recall appears under every model year it covers.