Trailer brake timing/fmvss 121
Defect Summary
Paccar is recalling certain model year 2013 kenworth t680, and peterbilt 579 vehicles, for failing to comply with the requirements of federal motor vehicle safety standard (fmvss) no. 121, "air brake systems." these vehicles exceed the brake timing test requirements of fmvss 121 for trailer circuits when 15 foot coiled trailer lines are used.
Safety Consequence
The longer brake apply time may result in extended stopping distances, increasing the risk of a crash.
Corrective Action
Paccar will notify owners and install a relay valve on the affected vehicles. all the vehicles have been repaired. owner may contact kenworth at 1-425-828-5440 and peterbilt at 1-940-591-4196.
Similar Recalls
Other recalls from Paccar Incorporated or involving Service Brakes, Air.
FAQ: Recall 12V214000
Your rights, the repair process, and what each field on this page means.
What is recall 12V214000?
NHTSA recall 12V214000 was issued by Paccar Incorporated on May 16, 2012. It addresses: Trailer brake timing/fmvss 121. The recall affects approximately 7 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Paccar Incorporated dealer and reference NHTSA recall ID 12V214000 or the manufacturer campaign number 12KWB/0512-A. 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.