NHTSA vehicle safety data
2021 Mack LR Recalls, Ratings & Complaints
The 2021 Mack LR has 3 NHTSA recall campaigns and 0 owner complaints on file as of October 16, 2026. Recall repairs are usually free at an authorized Mack dealer.
NHTSA recall and complaint data for the 2021 Mack LR. Recall data is refreshed daily from NHTSA.
STEERING
NHTSA #22V401000Reported June 7, 2022 · Mack Trucks, Inc.
Potentially affected: 5,644 vehicles
Defect description
Mack Trucks, Inc. (Mack) is recalling certain 2021-22 Granite, Anthem, LR, Pinnacle, and Terrapro tractor trailers. The steering gears may have been assembled incorrectly, which can cause the gear to fracture.
Safety consequence
A fractured steering gear can cause a loss of steering control, increasing the risk of a crash.
Manufacturer remedy
Dealers will replace the steering gear, free of charge. Owner notification letters were mailed on July 29, 2022. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0437.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
STEERING:HYDRAULIC POWER ASSIST:PUMP
NHTSA #21V856000Reported November 3, 2021 · Mack Trucks, Inc.
Potentially affected: 79 vehicles
Defect description
Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite and LR vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
Safety consequence
A loss of power steering assist increases the risk of a crash.
Manufacturer remedy
Dealers will replace the power steering pump, free of charge. Owner notification letters were mailed on December 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0432.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
SERVICE BRAKES, AIR
NHTSA #21V573000Reported July 27, 2021 · Mack Trucks, Inc.
Potentially affected: 124 vehicles
Defect description
Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite, LR, and TerraPro vehicles. The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.
Safety consequence
Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
Manufacturer remedy
Dealers will inspect the brake cams, and incorrect brake cams will be replaced, along with brake shoes, hardware, and wheel seals, as necessary, free of charge. Owner notification letters were mailed on August 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0427.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Other Mack LR model years
Check your 2021 Mack LR VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Mack LR at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
Check a Mack VIN