Recall 26V620000: Mack Trucks, Inc., service brakes, electric:software/programming
Reported 2026-09-28 · vehicle recall · 850 units
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Problem
Mack Trucks, Inc. (Mack) is recalling certain 2026-2027 Anthem AN (4) and Pioneer PR (4) vehicles equipped with a tanker application package. Inaccurate axle load calculations may cause reduced braking performance while transporting smoothbore tanker trailers.
Risk
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
Remedy
Dealers will install new software to disable the dynamic trailer braking calculations, free of charge. Owner notification letters are expected to be mailed November 27, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0500. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov on October 5, 2026.
Affected vehicles
| Make | Model | Year |
|---|---|---|
| MACK | ANTHEM AN (4) | 2026 |
| MACK | ANTHEM AN (4) | 2027 |
| MACK | PIONEER PR (4) | 2026 |
| MACK | PIONEER PR (4) | 2027 |
| Manufacturer campaign | SC0500 |
|---|---|
| Initiated by | MFR |
| Owner letters | not yet dated |
Original record: NHTSA · JSON: /api/recall/26V620000.json · all recent recalls
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