Hearth Record

Equipment: other: owners/service/other manual; electrical system: adas: hill descent assist: software (Mack)

Vehicle recall 26V-719. NHTSA received Mack Trucks, Inc.’s report on Oct 29, 2026.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received Mack Trucks, Inc.’s report on Oct 29, 2026. Copied from NHTSA on Nov 5, 2026.

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

What’s wrong with it?

A false hill start assist message can lead to unexpected vehicle rollback on an incline, increasing the risk of a crash.

Mack Trucks, Inc.

(Mack) is recalling certain 2024-2026 Medium-Duty Electric (MDe) vehicles that were incorrectly manufactured with the hill start assist (HSA) message enabled.

Source:

NHTSA, Recalls flat file. Released Nov 5, 2026. Updated daily.

  • NHTSA’s part: Equipment: other: owners/service/other manual.
  • NHTSA’s part: Electrical system: adas: hill descent assist: software.

What should you do?

Dealers will update the dashboard notification software and add a correction to the owner’s manual, free of charge. Owner notification letters are expected to be mailed December 28, 2026. Owners may contact Mack’s customer service at 1-800-866-1177. Mack’s number for this recall is SC0502. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 5, 2026.

Source:

NHTSA, Recalls flat file. Released Nov 5, 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 151 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 Nov 5, 2026. Updated daily.

Who is recalling it?

  • Made by Mack Trucks, Inc..
Source:

NHTSA, Recalls flat file. Released Nov 5, 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

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 Nov 5, 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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