NHTSA Campaign 21V953000
PARKING BRAKE
Issued by Mack Trucks, Inc. · Reported Dec 9, 2021 · 20,668 vehicles affected
What's wrong
Mack Trucks, Inc. (Mack) is recalling certain 2008-2019 TerraPro (MRU) and 2019-2022 TerraPro (TE) vehicles. A brake control valve air leak into the attached exhaust hose can create excessive back pressure, causing the parking brake to release unexpectedly.
Consequence
The unexpected release of the parking brake may allow the vehicle to rollaway, increasing the risk of a crash.
Remedy
Dealers will remove the exhaust tube and fitting from the valve, free of charge. Owner notification letters were mailed February 8, 2022. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0433.
Vehicles affected by this recall
| Make | Model | Year | Units |
|---|---|---|---|
| MACK | MRU | 2008 | 20,668 |
| MACK | MRU | 2009 | 20,668 |
| MACK | MRU | 2010 | 20,668 |
| MACK | TE | 2019 | 20,668 |
| MACK | TE | 2020 | 20,668 |
| MACK | TE | 2021 | 20,668 |
| MACK | TERRAPRO (MRU) | 2011 | 20,668 |
| MACK | TERRAPRO (MRU) | 2012 | 20,668 |
| MACK | TERRAPRO (MRU) | 2013 | 20,668 |
| MACK | TERRAPRO (MRU) | 2014 | 20,668 |
| MACK | TERRAPRO (MRU) | 2015 | 20,668 |
| MACK | TERRAPRO (MRU) | 2016 | 20,668 |
| MACK | TERRAPRO (MRU) | 2017 | 20,668 |
| MACK | TERRAPRO (MRU) | 2018 | 20,668 |
| MACK | TERRAPRO (MRU) | 2019 | 20,668 |
| MACK | TERRAPRO (TE) | 2022 | 20,668 |
Source: NHTSA Campaign 21V953000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.