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NHTSA product recall ยท 26V620000

Software Calculation Error May Cause Reduced Braking Performance Recall Details

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

Vehicle High risk Sep 28, 2026

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Recall overview

What This Recall Notice Says

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

Read Official Notice
Before you act: a similar product name is not enough. Match the identifiers, affected dates, model or lot details, and remedy instructions in the official notice.
1. Match the item

Check year, make, model, component and campaign details.

2. Read the risk

Review the hazard, consequence, risk level and whether the notice says to stop using, stop eating or keep the item away from children.

3. Follow the remedy

Look for refund, repair, replacement, disposal, software update, dealer service or company contact instructions.

4. Verify officially

Open the official source before making a safety decision, especially for vehicles, food, baby products and medical devices.

How To Tell If Yours Is Included

Campaigns can apply only to certain production ranges. Use this notice for campaign details, then verify your VIN or license plate through NHTSA or the manufacturer.

Recall Hazard And Risk

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.

Recall Remedy

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.

Affected Product Or Item

Software Calculation Error May Cause Reduced Braking Performance

Hazard Or Reason For Recall

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.

Official Remedy And What To Do Next

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.

How To Check If This Recall Applies To You

Check Campaign First, Then VIN

Use this page to understand the campaign, defect and remedy. Then confirm your exact vehicle through the official VIN or license plate lookup.

Compare Codes And Date Ranges

Check UPCs, lot codes, serial numbers, model numbers, best-by dates, date codes, VIN ranges, production dates or official campaign numbers when available.

Read The Hazard Before Use

Hazards can involve injury, fire, choking, contamination, undeclared allergens, crash risk, device failure, electrical shock or incorrect labeling.

Follow The Official Remedy

Confirm final instructions in the linked official notice before returning, repairing, disposing, stopping use, stopping consumption, contacting the company or scheduling service.

Key Vehicle Recall Checks

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Identity

Year, Make, Model And VIN

Vehicle recalls may apply only to specific production ranges or VINs, even when the same model name appears in the notice.

Risk

Hazard, Consequence And Risk Level

Use the hazard, consequence and risk level to understand whether the product should be stopped immediately or handled through normal recall instructions.

Action

Repair, Replacement, Refund Or Disposal

Recall remedies differ by agency and product type. The official notice is the final source for repair, refund, replacement, disposal, dealer service or stop-use steps.

Source

Official Agency Notice

This page helps you review public recall details in one place. Always use the linked agency or company notice before making a safety decision.

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Recall Detail FAQ

Short answers for checking whether this recall notice applies to your item.

How do I know if this recall affects my product?

Compare the product name, brand, model, UPC, lot code, serial number, VIN, date code, package size, retailer and distribution details with the official notice. All key details should match.

What should I do after finding a matching recall?

Stop using, feeding, driving or consuming the product when the notice says to do so, then follow the official remedy for repair, replacement, refund, disposal, service or company contact.

Is this page the official recall notice?

No. This site helps you review public recall details. Use the linked official notice as the final source for affected products and safety instructions.

Why can a recall page change after publication?

Agencies and companies may update notices with expanded products, corrected codes, new risk classifications, remedy availability or additional distribution details.