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Kenworth T280 Recall 23V661: Delayed Trailer Brake Release Can Destabilize Trailer

NHTSA campaign 23V661, reported September 29, 2023, 254 vehicles potentially affected.

What this recall means for you

Some heavy trucks may have a delay in the timing of the trailer brake release, which means the trailer brakes may not release at the correct time. This does not meet the requirements of Federal Motor Vehicle Safety Standard 121 for air brake systems.

A delay in the trailer brake release can create instability in the trailer and increase the risk of a crash. Owners of affected trucks should watch for any signs of trailer instability and contact an authorized dealer as soon as possible.

Dealers will replace the fittings and hoses in the affected valves free of charge. Owner letters were mailed January 15, 2024. You can contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220, referencing PACCAR recall numbers 23KWJ or 23PBJ. You can also check your vehicle identification number (VIN) for open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 23V661PACCAR Incorporated
Component
SERVICE BRAKES, AIR
Problem
PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Kenworth T280, T380, 2020-2024 Peterbilt 548, 536, 2024 Peterbilt 537, and 2020-2024 Kenworth T480 trucks. The timing of the trailer brake release may be delayed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk
A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash.
Remedy
Dealers will replace the fittings and hoses in the affected valves, free of charge. Owner letters were mailed January 15, 2024. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 23KWJ and 23PBJ.
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.nhtsa.gov.

Affected vehicles

Kenworth T2802021202220232024
Kenworth T3802021202220232024
Kenworth T48020202021202220232024
Peterbilt 53620202021202220232024
Peterbilt 5372024
Peterbilt 54820202021202220232024