Safety Recall NHTSA · 23V661000 Reported September 29, 2023

Delayed trailer brake release/fmvss 121

Paccar Incorporated · N/A · 254 vehicles potentially affected

NHTSA ID
23V661000
Manufacturer Campaign
23KWJ, 23PBJ
Manufacturer
Paccar Incorporated
Component
N/A
Vehicles Affected
254
Recall Type
Vehicle
Report Received
September 29, 2023
Completion Rate
65.75

Defect Summary

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."

Safety Consequence

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

Corrective Action

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.

What you should do

  1. Look up your VIN at nhtsa.gov/recalls to confirm this recall applies to your vehicle.
  2. Contact an authorized Paccar Incorporated dealer and reference recall ID 23V661000 or campaign 23KWJ, 23PBJ.
  3. Schedule the free repair. By federal law, the manufacturer must remedy the defect at no cost.
View Official NHTSA Notice →
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FAQ: Recall 23V661000

Your rights, the repair process, and what each field on this page means.

What is recall 23V661000?

NHTSA recall 23V661000 was issued by Paccar Incorporated on September 29, 2023. It addresses: Delayed trailer brake release/fmvss 121. The recall affects approximately 254 vehicles, with the defect involving the N/A component.

How do I get this recall repaired?

Contact any authorized Paccar Incorporated dealer and reference NHTSA recall ID 23V661000 or the manufacturer campaign number 23KWJ, 23PBJ. Under federal law, the repair is completely free regardless of vehicle age or owner history.

Is my vehicle included in this recall?

The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.

How long do I have to get a recall repair done?

There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.

Where does the data on this page come from?

All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.