NHTSA Recall 20V086000: Differential proportional valve (service brakes)
PACCAR Incorporated reported this safety recall to NHTSA on , covering an estimated 4 vehicles. It affects 2020 Kenworth T370.
| NHTSA campaign | 20V086000 |
|---|---|
| Manufacturer campaign | 20KWA |
| Component | SERVICE BRAKES, HYDRAULIC › FOUNDATION COMPONENTS › DIFFERENTIAL PROPORTIONAL VALVE |
| Report received | February 14, 2020 |
| Owner notification | May 6, 2020 |
| Initiated by | Manufacturer |
Defect
PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T370 long wheelbase vehicles with larger rear axle spacing. The vehicles may be missing a second R12 relay valve, causing increased brake activation timing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
Safety risk
Increased brake activation timing may lengthen vehicle stopping distance, increasing the risk of a crash.
Remedy
PACCAR will notify owners, and Kenworth dealers will install a second R12 relay valve, free of charge. PACCAR issued owners an interim notification on April 14, 2020. The recall began May 6, 2020. Owners may contact Kenworth customer service at 1-425-828-5888. PACCAR's number for this recall is 20KWA.
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.safercar.gov.
Vehicles covered by recall 20V086000
| Make and model | Model years |
|---|---|
| Kenworth T370 | 2020 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.