Vehicle recall 20V086000 · February 14, 2020
2020 Kenworth T370
The vehicles may be missing a second R12 relay valve, causing increased brake activation timing.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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."
- Consequence
- 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.
Recall details
- NHTSA campaign
- 20V086000
- Reported to NHTSA
- February 14, 2020
- Filed by
- PACCAR Incorporated
- Manufacturer campaign
- 20KWA
- Owner notification
- May 6, 2020
- Vehicles potentially affected
- 4
- Initiated by
- the manufacturer
- Components
- Service brakes, hydraulic › Foundation components › Differential proportional valve
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Kenworth T370 (2020): 2020
Has your Kenworth been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Kenworth dealer can also check your VIN. Recall repairs are free.