Exterior lighting: lighting control module (Mack)
Vehicle recall 25V-622. NHTSA received Mack Trucks, Inc.’s report on Sep 18, 2025.
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The short answer
NHTSA received Mack Trucks, Inc.’s report on Sep 18, 2025. Copied from NHTSA on Oct 23, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
Trailer tail lights and turn signals that do not illuminate as intended can reduce visibility to other drivers, increasing the risk of a crash.
Mack Trucks, Inc.
(Mack) is recalling certain 2025-2026 Pioneer vehicles.
When towing a trailer, the trailer lights may fail to illuminate due to an improperly manufactured body control module.
NHTSA, Recalls flat file. Released Oct 23, 2026. Updated daily.
- NHTSA’s part: Exterior lighting: lighting control module.
What should you do?
Dealers will replace the trailer body input/output module, free of charge. Owner letters were mailed November 19, 2025. Owners may contact Mack’s customer service at 1-800-866-1177. Mack’s number for this recall is SC0484.Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 25, 2025.
NHTSA, Recalls flat file. Released Oct 23, 2026. Updated daily.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 156 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 23, 2026. Updated daily.
Who is recalling it?
- Made by Mack Trucks, Inc..
NHTSA, Recalls flat file. Released Oct 23, 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
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National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 23, 2026 and checked Oct 23, 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 23, 2026.