The Recall Desk
HighNHTSA·26V207000·Announced 2026-04-01

Mack Recalls 2025-2027 Trailers Due to Turn Signal Software Defect

Mack Trucks is recalling 2025-2027 Pioneer and 2027 Anthem trailers because turn signals may not function properly, increasing crash risk.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: The recall involves a safety-critical component (turn signals) that increases the risk of a crash, but no injuries or fatalities have been reported, fitting the 'High' severity criteria for risk-of-harm products without reported injury.

Plain-English summary

Mack Trucks, Inc. is recalling certain 2025-2027 Pioneer (4) and 2027 Anthem (4) trailers. The recall involves 86 vehicles where the turn signals may not function properly. This defect causes the vehicles to fail to comply with Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Turn signals that do not function properly may fail to indicate the driver's intention to change vehicle direction, which increases the risk of a crash. No specific injuries or fatalities are reported in the source text.

Dealers will update the turn signal indicator software free of charge. Owner notification letters were mailed on May 7, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0493. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on April 1, 2026.

The recalled product

Product
MACK PIONEER PR (4), ANTHEM AN (4)
Brand
MACK
Manufacturer
Mack Trucks, Inc.
Category
Vehicle — Trailer
Hazard
Affected units
86

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (2)

  • PIONEER PR (4)
  • ANTHEM AN (4)

Distribution

Distributed nationwide across the United States.

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