CarRecallWatch- Component
- SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE
- Problem
- PACCAR Incorporated (PACCAR) is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors. The trailer air connection quick release (QR) valve in the air brake system may have been incorrectly installed, which can cause the trailer to become unstable after the driver applies the brakes. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
- Risk
- An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
- Remedy
- Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACC.
What this recall means for you
A trailer air connection quick release valve in the air brake system may have been installed incorrectly. This can make the trailer unstable after the driver applies the brakes, and a valve that does not function properly can increase the risk of a crash. The affected vehicles also do not meet Federal Motor Vehicle Safety Standard 121, which governs air brake systems.
All affected tractors have already been repaired, so owners are not being sent notification letters. PACCAR inspected the valves and reinstalled them where needed, free of charge. If you own an affected truck, you can contact Peterbilt customer service at 1-940-591-4220 or Kenworth customer service at 1-425-828-5888 to confirm the status of your vehicle.
You can also check your vehicle identification number (VIN) for open recalls to confirm whether any work remains on your tractor.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Kenworth T680 | 2027 |
|---|---|
| Peterbilt 579 | 20262027 |