2021 MACK LR — Problems, Recalls & Safety Data
N/A
Safety Rating
0
Owner Complaints
3
Recalls
1
Service Bulletin
0
Investigations
Overview of the 2021 MACK LR
The 2021 MACK LR has received a total of 0 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 3 recall campaigns affecting this vehicle, covering issues with STEERING, STEERING:HYDRAULIC POWER ASSIST:PUMP, SERVICE BRAKES, AIR. 1 technical service bulletin have been issued by Mack Trucks, Inc. for this model year.
Recalls for the 2021 MACK LR
NHTSA has recorded 3 recalls for the 2021 MACK LR, potentially affecting up to 5,847 vehicles.
Recall 22V401000 — STEERING
| 5,644 vehicles affected
Defect: 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.
Consequence: A fractured steering gear can cause a loss of steering control, increasing the risk of a crash.
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.
View full details →Recall 21V856000 — STEERING:HYDRAULIC POWER ASSIST:PUMP
| 79 vehicles affected
Defect: 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.
Consequence: A loss of power steering assist increases the risk of a crash.
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.
View full details →Recall 21V573000 — SERVICE BRAKES, AIR
| 124 vehicles affected
Defect: 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.
Consequence: Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
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...
View full details →Owner Complaints for the 2021 MACK LR
No complaints have been filed with NHTSA for the 2021 MACK LR.
Safety Rating for the 2021 MACK LR
NHTSA has not yet tested the 2021 MACK LR in its New Car Assessment Program.
Technical Service Bulletins for the 2021 MACK LR
Mack Trucks, Inc. has issued 1 technical service bulletin (TSBs) for the 2021 MACK LR. TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.
KC-2107 — UNKNOWN OR OTHER
DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
NHTSA Investigations for the 2021 MACK LR
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the MACK LR
- 2016 MACK LR — 0 complaints
- 2017 MACK LR — 0 complaints
- 2018 MACK LR — 0 complaints
- 2019 MACK LR — 1 complaint
- 2020 MACK LR — 0 complaints
- 2021 MACK LR (current)
- 2022 MACK LR — 0 complaints
- 2023 MACK LR — 0 complaints
- 2024 MACK LR — 0 complaints
- 2025 MACK LR — 0 complaints
Other MACK Models
- MACK MACK — 35 total complaints
- MACK ANTHEM (AN) — 12 total complaints
- MACK CXU612 — 12 total complaints
- MACK CX613 — 10 total complaints
- MACK GRANITE (GR) — 10 total complaints
- MACK CH600 — 9 total complaints
- MACK GU — 9 total complaints
- MACK RD — 8 total complaints