Mack Trucks (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.
Mack Trucks – Parking Brake May Release Unexpectedly
| Report Received Date | 12/09/2021 |
| NHTSA ID | 21V953000 |
| Consequence Summary | The unexpected release of the parking brake may allow the vehicle to rollaway, increasing the risk of a crash. |
| Corrective Action | 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. |
| Recall Code | SC0433 |
| Potentially Affected | 20668 |
| Fire Risk When Parked | No |
| Do Not Drive | No |
| Recall Link | Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=21V953000) |
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