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Mack trailer turn signals may not function properly.

NHTSA campaign 26V-207 · Reported April 1, 2026 · 86 vehicles affected

AFFECTED MODELS
Mack Anthem and Pioneer
VEHICLES AFFECTED
86
REMEDY
Dealers will update the turn signal indicator software, free of charge.
COST
Free

The short version

Mack Trucks, Inc. reported a problem with the exterior lighting turn signal. Here is what owners need to know.

WHAT

The trailer turn signals may not function properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

WHY IT MATTERS

Turn signals that do not function properly may fail to indicate the driver's intention to change vehicle direction, increasing the risk of a crash.

WHAT TO DO

Take it to a dealer — they will update the turn signal indicator software, free of charge.

Affected vehicles

These model years are included in NHTSA campaign 26V-207.

YEAR RANGEMODEL
2027Mack Anthem
2025–2027Mack Pioneer

What changed

Newest first. The record shows both when the recall began and what has changed since.

  1. Recall reported to NHTSA. LATEST

Drive one of these? Check your VIN to see if your specific vehicle is affected.

Check your VIN

What this record means

Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.

Not affiliated

MyAutoRecalls is not affiliated with Mack Trucks, Inc. or the National Highway Traffic Safety Administration.