NHTSA recall 26V620000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 26V620000 |
| Manufacturer's number | SC0500 |
| Manufacturer | Mack Trucks, Inc. |
| Reported | 2026-09-28 |
| Component | SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING |
| Units potentially affected | 850 |
| Part numbers | 26020191 |
What is wrong
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.
What can happen
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
The 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.
| 2026 MACK ANTHEM AN (4) | Built 2025-07-08 to 2026-09-26. Listed as a series or trim of this model. |
|---|---|
| 2027 MACK ANTHEM AN (4) | Built 2025-07-08 to 2026-09-21. Listed as a series or trim of this model. |
| 2026 MACK PIONEER PR (4) | Built 2025-02-24 to 2026-09-11. Listed as a series or trim of this model. |
| 2027 MACK PIONEER PR (4) | Built 2025-02-24 to 2026-09-11. Listed as a series or trim of this model. |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| CBR 2599 202608 | 2026-09-01. Service bulletin. The purpose of this CBR is to provide support for complaints of trailer braking aggressively. |
|---|---|
| TSB M-590-001 072026 | 2026-08-03. Service bulletin. TSB - Wheel Speed Sensor Fitting And Cable Clamping. |
| CBR 2585-1 202605 | 2026-06-02. Service bulletin. CBR to provide support for fault codes C106718 and/or C106818. |
| CBR 2569-3 202604 | 2026-05-05. Service bulletin. CBR - Brake Pad Wear Indicator DTC C107E68. |
| CBR 2570-1 032026 | 2026-04-02. Service bulletin. CBR - EBS - Electro-Pneumatic Module - Signal Compare Failure DTC C109562 - AN (4) - PR. |
| CBR 2443-3 202601 | 2026-02-03. Service bulletin. CBR - Trailer Tandem Adjustment Procedure - PR (4) - AN (4). |
| CBR 2503 092025 | 2025-10-01. Service bulletin. The purpose of this CBR is to outline the steps for adjusting brake pedal freeplay following Foot Brake Modulator (FBM) replacement or when diagnostic code C10C3-77is present. |
| CBR 407 072025 | 2025-08-04. Service bulletin. CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.