Hearth Record

Service brakes, electric: software/programming (Mack)

Vehicle recall 26V-620. NHTSA received Mack Trucks, Inc.’s report on Sep 28, 2026.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received Mack Trucks, Inc.’s report on Sep 28, 2026. Copied from NHTSA on Oct 28, 2026.

Every line below is in NHTSA’s own words, with its source beside it.

What’s wrong with it?

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

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.

Source:

NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.

  • NHTSA’s part: Service brakes, electric: software/programming.

What should you do?

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.

Source:

NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.

  • Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.

Which ones are recalled?

NHTSA counts 850 vehicles potentially involved, across everything this recall names.

Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.

Source:

NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.

Who is recalling it?

  • Made by Mack Trucks, Inc..
Source:

NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.

What the record doesn’t say

  • NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
  • Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
  • How many have been returned or fixed isn’t in the notice.
Source:

Hearth Record wrote these lines.

Sources

  • National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).

    Released Oct 28, 2026 and checked Oct 28, 2026. Updated daily. Public domain (U.S. Government work).

Source:

Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 28, 2026.

How to read a record

Four things every record does, shown on an example record made up for this guide.

An example record, made up for this guide

An example nursing home

Made up for this guide: no real place is shown

Not fully inspected in over two years (CMS flag)

11 health citations at the latest inspection cycle

The state average is 14.3.

Source:

CMS, State and US Averages and Health Deficiencies. Released Oct 28, 2026. Updated monthly.

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Every fact names its source.

Who published it, when, and how often it changes sit beside each fact, with a link to the agency’s own file.

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