RECALLS — MAKE · MODEL · YEAR
2020 Mack LR recalls
3 safety recall campaigns have been filed for the 2020 Mack LR with Transport Canada and the U.S. NHTSA. Here is what both agencies say.
- Canadian recalls
- 02
- U.S. recalls
- 01
- Total campaigns
- 03
Transport Canada recalls
02- Lights And Instruments#2022361
4,304 units affected
Issue: On certain trucks, some controls are not identified with the required symbol(s) or word(s). Specifically, the identifications for the HVAC fan control, the position side marker light control, the master lighting switch control and the turn signal control may be missing or mislabeled. Canadian regulations require the use of certain symbols and words for controls. This can help to avoid driver confusion. Safety Risk: These small errors do not affect safety or the function of the controls. Corrective Actions: This is not a recall. Mack has made changes to ensure that the controls for all new trucks are identified with the required symbol(s) and word(s).
- Steering#2021248
4 units affected
Issue: On a small number of trucks, the steering transfer case was not properly filled with oil. As a result, the bearings may fail and the steering could lock-up. Safety Risk: A loss of steering control could create the risk of a crash. Corrective Actions: Mack will notify owners by mail and instruct you to take your truck to a dealer to inspect, and if necessary, replace the steering transfer case. To reduce the safety risk, Mack recommends that you should avoid driving your truck until this recall is completed.
Canadian data updated August 24, 2026
U.S. NHTSA recalls
01- STEERING#21V293000
Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 LR vehicles. The steering transfer case may have an insufficient amount of oil.
Risk: The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash.
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.
Does this recall apply to my vehicle?
Matched by make, model, and model year. Many recalls affect only specific VIN ranges — confirm with your dealer using your full VIN.
What to do
Recall repairs are free at a franchised dealer in both countries. To confirm a recall applies to your specific vehicle, or to book the work, contact your manufacturer or dealer with your full VIN, or use the official channel:
- NHTSA recall lookup (search by VIN) — U.S. National Highway Traffic Safety Administration
- Defects and recalls database — Transport Canada
Check a 2020 Mack LR VIN
A VIN decode confirms your vehicle's exact model year, trim and assembly plant, then runs this same recall check against it.