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NHTSA · Vehicle · Recall 26V620000 · Recalled September 28, 2026

Mack Trucks Service Brakes, Electric recall (26V620000)

1. Compare your item

This notice names a product; your particular item is not yet verified. Compare every applicable model, serial, lot, production-date or model-year boundary below.

Product named
Mack Anthem An (4); Mack Pioneer PR (4)
Company / brand
Mack Trucks
Model / item numbers
Anthem An (4); Pioneer PR (4)
Affected model years / models
2027 Mack Pioneer PR (4); 2027 Mack Anthem An (4); 2026 Mack Pioneer PR (4); 2026 Mack Anthem An (4)
Agency product description and boundaries

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.

Still to verify: match the label on your item with the full official notice, including any exclusions, tables and photos. Some identifiers appear only on the agency website and are absent from this data feed. A missing field does not mean all versions are affected.

If your lot or date falls outside a stated range, this notice has not established that your item is affected. This is not a finding about other recalls or product safety.

Vehicle-specific check required: use NHTSA’s official VIN lookup. Fresh Recalls has not checked a VIN or repair status and does not ask you to submit a VIN.

2. Agency hazard and consumer action

NHTSA reports: Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.

NHTSA consumer action: 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.

3. Open the official notice or contact

To check whether your vehicle is affected and unrepaired, look up your VIN on NHTSA’s recall search ↗.

Official recall ID
26V620000
Brand
All Mack Trucks recalls
Component
SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING
Units affected
850

Affected vehicles

NHTSA lists 4 affected year / make / model configurations across 1 make (Mack). Every model below has its own page; the full year list is under “Identifying details”.

Companies & origin

Manufacturer
Mack Trucks, Inc.

Identifying details (verbatim from the notice)

Model years affected
2027 Mack Pioneer PR (4); 2027 Mack Anthem An (4); 2026 Mack Pioneer PR (4); 2026 Mack Anthem An (4)
Verify with the official sources:

Found something wrong or missing? Report a data error.

Source: National Highway Traffic Safety Administration. Agency excerpts come from the public data feed and may omit tables or later changes; the linked government source is authoritative. Source last checked October 18, 2026 at 12:00 AM UTC. Record retrieved October 14, 2026 at 12:00 PM UTC.

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