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NHTSA campaign 26V620000 · manufacturer recall SC0500

2026–2027 Mack Anthem AN (4) and 1 other Mack model: service brakes, electric recall

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

minor 850 vehicles affected

What was reported

Source: manufacturer filing, 49 CFR Part 573
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. Fix 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.

Reported to NHTSA Sep 28, 2026 by Mack Trucks, Inc.

The fix, from the dealer bulletin

Source: NHTSA remedy instructions and dealer notice
Stop-sale Not stated in the dealer documents
Remedy No availability line in the dealer notice

Read from NHTSA’s copy of the manufacturer’s dealer documents (manufacturer campaign SC0500). The procedure itself is in the bulletin; a franchised dealer has the current copy on the manufacturer’s portal, and that copy governs. Working a lot or a fleet? Recall Watch carries this line on every VIN it checks: remedy status, hours, stop-sale.

Which vehicles are covered

Source: NHTSA campaign 26V620000

Vehicles built Jul 8, 2025 to Sep 26, 2026 — a VIN outside that window is not part of this campaign even if the year, make and model match.

Model yearOn WhichTrim
2026 Mack Anthem AN (4)—
2027 Mack Anthem AN (4)—
2026 Mack Pioneer PR (4)—
2027 Mack Pioneer PR (4)—

None of the vehicles this campaign names has a page on WhichTrim: the catalogue covers the cars, trucks and SUVs the EPA certifies from 2016 on, and these vehicles fall outside it — older model years, or motorhomes, trailers, buses, motorcycles and chassis cabs the EPA does not rate. The campaign record above is complete as filed, and whether one specific vehicle is included is settled by its VIN. Other campaigns on vehicles without a page here →

The federal paperwork

Source: nhtsa.gov

Check one specific vehicle

A recall applies to a build range, so year, make and model cannot settle it. NHTSA checks a VIN against the manufacturer's own list and tells you whether the repair is still outstanding on that vehicle.

NHTSA VIN recall lookup →

Campaign 26V620000 · the manufacturer calls it SC0500

Own one, or run a fleet? Recall Watch checks each VIN against every new NHTSA campaign and emails you when one lands, this one's expansions included. Or take a free one-line alert by model year.

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A recall covers a build range. Only your VIN settles it.

Check it against NHTSA’s database now, or have us check it every night and email you when something new is filed.

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Common questions

Source: NHTSA, 49 CFR Part 573

Is SC0500 the same recall as 26V620000?

Yes. SC0500 is the number Mack Trucks, Inc uses for this campaign in its own paperwork and in the letter it sends owners. 26V620000 is the number NHTSA files it under. One recall, two references — dealers and service departments generally quote the manufacturer's.

Does this recall repair cost anything?

No. Federal law requires the manufacturer to remedy a safety defect or a compliance failure at no charge, for vehicles up to 15 years old measured from the date of first sale. A dealer that asks you to pay for a recall repair is in the wrong.

How do I know whether my vehicle is included?

By VIN, not by model year. This campaign covers vehicles built Jul 8, 2025 to Sep 26, 2026. The manufacturer files a build range with NHTSA and only vehicles inside it are covered, so two identical-looking cars from the same year can differ. NHTSA's own lookup checks a VIN against the manufacturer's list.

What if the repair is not available yet?

It happens, and often. Manufacturers must notify owners when a defect is found even if the parts or the software are not ready, then notify them a second time once the remedy exists. The remedy filed for this campaign is described above.

What did the manufacturer say was wrong?

The problem, risk and fix quoted on this page are the manufacturer's own words as filed with NHTSA under 49 CFR Part 573. WhichTrim does not paraphrase them.

Who started this recall?

NHTSA's record credits the manufacturer. A recall can begin with the manufacturer's own testing, with a defect investigation, or with a compliance test against a Federal Motor Vehicle Safety Standard.