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Kenworth timing of the trailer brake release may be delayed.

NHTSA campaign 23V-661 · Reported September 29, 2023 · 254 vehicles affected

AFFECTED MODELS
Kenworth T280, T380, T480, 536, 537 and 548
VEHICLES AFFECTED
254
REMEDY
Dealers will replace the fittings and hoses in the affected valves, free of charge.
COST
Free

The short version

PACCAR Incorporated reported a problem with the service brakes, air. Here is what owners need to know.

WHAT

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."

WHY IT MATTERS

A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash.

WHAT TO DO

Take it to a dealer — they will replace the fittings and hoses in the affected valves, free of charge.

Affected vehicles

These model years are included in NHTSA campaign 23V-661.

YEAR RANGEMODEL
2021–2024Kenworth T280
2021–2024Kenworth T380
2020–2024Kenworth T480
2020–2024Peterbilt 536
2024Peterbilt 537
2020–2024Peterbilt 548

What changed

Newest first. The record shows both when the recall began and what has changed since.

  1. Recall reported to NHTSA. LATEST

Drive one of these? Check your VIN to see if your specific vehicle is affected.

Check your VIN

What this record means

Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.

Not affiliated

MyAutoRecalls is not affiliated with PACCAR Incorporated or the National Highway Traffic Safety Administration.