Recall Register

2026 Mack Anthem AN (4): recalls and complaints

NHTSA lists 3 recall campaigns for the 2026 Mack Anthem AN (4). The newest campaign is 26V620000. NHTSA received the report on 28 Sep 2026. The NHTSA record gives the component Service Brakes, Electric / Software/Programming. NHTSA has no complaint on file for this model year.

The NHTSA recall file shows no do-not-drive advisory and no park-outside advisory on these campaigns.

This page cannot show if a recall applies to one vehicle. The NHTSA VIN lookup shows the unrepaired recalls of one vehicle.

Remedy of the newest campaign, 26V620000, in the NHTSA record

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.
NHTSA VIN lookup

Complaint information entered into NHTSA’s Office of Defects Investigation vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists.

NHTSA publishes these words. Source: NHTSA Datasets and APIs, section Complaints, read on . Complaint file through . Recall file through .

Since the last update

No tracked figure of this page changed in a data update. What the log tracks

All updates to the register

Recall campaigns

3 campaigns, newest first. 3,869 units in total.

  1. 26V620000Received . 850 units.

    Service Brakes, Electric / Software/Programming

    Defect, in the NHTSA record
    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.
    Consequence, in the NHTSA record
    Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
    Remedy, in the NHTSA record
    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.

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0500.

  2. 26V261000Received . 2,772 units.

    Service Brakes, Air / Antilock / Control Unit/Module

    Defect, in the NHTSA record
    Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles. The rear brake modulators may have unprotected electrical connectors that can short circuit and lead to a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).
    Consequence, in the NHTSA record
    A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
    Remedy, in the NHTSA record
    Dealers will inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators, as necessary, free of charge. Owner notification letters were mailed June 8, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0494. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 30, 2026.

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0494. Owner notification date in the NHTSA record: .

  3. 25V803000Received . 247 units.

    Exterior Lighting / Lighting Control Module / Software

    Defect, in the NHTSA record
    Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (4) and 2025-2026 Pioneer vehicles. The automatic high beams (AHB) may not switch to low beam headlights as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
    Consequence, in the NHTSA record
    High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.
    Remedy, in the NHTSA record
    As an interim action, Mack will update the vehicle software through an over-the-air (OTA) update to disable the AHB feature, free of charge. Owner letters were mailed May 29, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0488. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 27, 2025.

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0488. Owner notification date in the NHTSA record: .

The campaign number opens the NHTSA record. Each quotation is the text of the NHTSA recall file.

Recall campaign: One recall in the NHTSA recall file, with one campaign number. A campaign can name many makes, models and model years.

Units: The number of vehicles or products that a recall can include. The manufacturer or the firm reports the number to the agency.

Complaints by component

The NHTSA complaint file has no complaint for this model year.

Investigations

The NHTSA investigation file has no investigation that names this model year.

Investigation: A study of a possible safety defect by the NHTSA Office of Defects Investigation. An investigation with no closing date in the NHTSA file is open.

Other model years

The number under each year is the number of recall campaigns.

  1. 20263
  2. 20275

A year without a link has fewer than 2 campaigns and fewer than 25 complaints. It has no page.

Official channels

Cite this page

Recall Register. 2026 Mack Anthem AN (4): recalls and complaints. https://recallregister.com/vehicle/mack/anthem-an-4/2026/. Source: NHTSA Office of Defects Investigation, recall, complaint and investigation files. Data through .

Sources

Source
NHTSA Office of Defects Investigation
Licence
US government work, public domain
Recall file through
30 Sep 2026
Complaint file through
29 Mar 2018
First complaint in the file
1 Jan 1995
Manufacturer in the recall file
Mack Trucks, Inc.

The NHTSA record is the authority. A complaint count is the number of different complaint numbers for the make, the model and the model year. How the register is made. Report an error.

Questions

How many units are in the recall campaigns for the 2026 Mack Anthem AN (4)?
3,869 units in 3 campaigns. A campaign can name other models and model years, and its units include them.
How many recall campaigns does the Mack Anthem AN (4) have for all model years?
NHTSA lists 6 recall campaigns for the Mack Anthem AN (4), model years 2026 to 2027. 3 of them name the 2026 model year.
Is an NHTSA investigation of the 2026 Mack Anthem AN (4) open?
The NHTSA investigation file has no investigation that names this model year.