Electrical system: propulsion system: traction battery: management system/energy control module (bms/becm): software (Mack)
Vehicle recall 24V-399. NHTSA received Mack Trucks, Inc.’s report on Jun 4, 2024.
- NHTSA: do not drive
Watch and the shortlist are kept with a free account, on every device. Your watch list. NHTSA’s own record is on nhtsa.gov.
The short answer
NHTSA received Mack Trucks, Inc.’s report on Jun 4, 2024. Copied from NHTSA on Oct 19, 2026.
- Do not drive NHTSA’s advice to owners (needs attention)
- 24 vehicles potentially involved, by NHTSA’s count
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
A sudden loss of steering control and drive power increases the risk of a crash.
Mack Trucks, Inc.
(Mack) is recalling certain 2024 MMDe electric trucks.
The battery management system software may cause the high-voltage battery to shut down, which can result in a sudden loss of steering control and drive power.
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
- NHTSA’s part: Electrical system: propulsion system: traction battery: management system/energy control module (bms/becm): software.
What should you do?
Owners are advised not to drive their vehicles until the remedy has been completed. Dealers will update the battery management system software, free of charge. Owner notification letters were mailed July 10, 2024. Owners may contact Mack customer service at 1-800-866-1177. Mack’s number for this recall is SC0464.
NHTSA’s advice: Do not drive
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
- How to reach the firm: 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.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 24 vehicles potentially involved, across everything this recall names.
Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
- Mack MD (Electric)2024
Who is recalling it?
- Made by Mack Trucks, Inc..
NHTSA, Recalls flat file. Released Oct 19, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
-
National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 19, 2026 and checked Oct 19, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 19, 2026.