Mack/meritor wabco/haldex/brake valves
Defect Summary
Vehicle description: heavy duty trucks equipped with certain meritor-wabco brake system two and four port relay valves. the valve may stick open when a high-pressure application is released.
Safety Consequence
When the valve sticks open, it can result in a total loss of air from either the service or the park brake system. the driver may lose braking ability under a service application, possibly resulting in a vehicle crash.
Corrective Action
Dealers will replace these valves. owner notification began november 16, 2001. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact mack at 1-610-709-3011 or meritor wabco at 800-535-5560.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Service Brakes, Air.
FAQ: Recall 01V189004
Your rights, the repair process, and what each field on this page means.
What is recall 01V189004?
NHTSA recall 01V189004 was issued by Mack Trucks, Inc. on August 1, 2001. It addresses: Mack/meritor wabco/haldex/brake valves. The recall affects approximately 8,268 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 01V189004 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.