The defect
Mack Trucks, Inc. (Mack) is recalling certain 2010-2018 MRU and 2019-2025 Terrapro towing vehicles. The vehicles are missing the anti-lock brake (ABS) warning light and circuitry that controls the anti-lock brake function for an attached trailer. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
The risk
Driving without a functioning anti-lock brake system may result in the trailer not braking as intended, increasing the risk of a crash.
The remedy
Dealers will add an ABS warning light and circuitry, free of charge. Owner notification letters were mailed April 28, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0474.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack MRU | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Mack Terrapro (te) | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
Components: SERVICE BRAKES, AIR:ANTILOCK
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack MRU | 2010 | 0 | 7 |
| Mack MRU | 2011 | 0 | 10 |
| Mack MRU | 2012 | 0 | 9 |
| Mack MRU | 2013 | 0 | 6 |
| Mack MRU | 2014 | 0 | 7 |
| Mack MRU | 2015 | 0 | 3 |
| Mack MRU | 2016 | 0 | 2 |
| Mack MRU | 2017 | 0 | 1 |
| Mack MRU | 2018 | 1 | 1 |
| Mack Terrapro (te) | 2019 | 0 | 1 |
| Mack Terrapro (te) | 2020 | 0 | 2 |
| Mack Terrapro (te) | 2021 | 0 | 2 |
| Mack Terrapro (te) | 2022 | 0 | 5 |
| Mack Terrapro (te) | 2023 | 0 | 4 |
| Mack Terrapro (te) | 2024 | 0 | 7 |
| Mack Terrapro (te) | 2025 | 0 | 4 |
Other service brakes, air recalls in 2025
24 of the 891 recall campaigns reported to NHTSA in 2025 concerned the service brakes, air; Mack Trucks, Inc. filed 118 campaigns in all.
| 25V898000 19 Dec 2025 | New Flyer of America, Inc. |
| 25V867000 15 Dec 2025 | Mack Trucks, Inc. |
| 25V817000 25 Nov 2025 | International Motors, LLC |
| 25V806000 20 Nov 2025 | International Motors, LLC |
| 25V795000 17 Nov 2025 | PACCAR Incorporated |
| 25V781000 13 Nov 2025 | International Motors, LLC |
| 25V724000 23 Oct 2025 | Wartech Engineering, LLC |
| 25V602000 11 Sept 2025 | Daimler Trucks North America, LLC |
NHTSA recalls (public domain) · all recalls of 2025