NHTSA recall 21V293000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V293000 |
| Manufacturer's number | SC0424 |
| Manufacturer | Mack Trucks, Inc. |
| Reported | 2021-04-26 |
| Owners notified | 2021-05-12 |
| Component | STEERING |
| Units potentially affected | 272 |
| Part numbers | 84726804 |
| Report | Annual report 3, for 2025 quarter 2 to 2026 quarter 1 |
|---|---|
| Filed with NHTSA | 2026-04-15 |
| Vehicles in the campaign | 272 |
| Reported remedied | 223 (81%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2026 quarter 1, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 LR vehicles. The steering transfer case may have an insufficient amount of oil.
What can happen
The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash.
The remedy
Dealers will replace the transfer case, free of charge. Owner notifications letters were mailed on May 12, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0424.
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.safercar.gov.
| 2019 MACK LR | |
|---|---|
| 2020 MACK LR |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| CBR 2515-1 102025 | 2025-11-03. Service bulletin. CBR - Hard Steering Due to Steering Column Miter Box Corrosion – Inspection and Replacement Procedure |
|---|---|
| S7643 | 2022-05-05. Service bulletin. Steering Shaft at Miter Box, Inspection |
| S7580 | 2021-05-04. Service bulletin. V Stay Apex Housing Premature Failure |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.