# NHTSA recall 20V593000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: NHTSA \(United States\)
- Campaign number: 20V593000
- Manufacturer's number: 20KWD
- Manufacturer: PACCAR Incorporated
- Reported: 2020\-09\-28
- Owners notified: 2020\-11\-30
- Component: SERVICE BRAKES, AIR:ANTILOCK
- Units potentially affected: 1416
- Part numbers: 4721950520

## What is wrong

PACCAR Incorporated \(PACCAR\) is recalling certain 2016\-2021 Kenworth T680 trucks equipped with a 2.1m Cab and WABCO 6S/6M ABS brake system with drum brakes.  The brake systems were manufactured with a standard rear\-brake ABS modulator valve instead of a quick release valve, which may exceed the intended service\-brake release timing.  As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."


## What can happen

Longer than expected service\-brake release timing may lengthen vehicle stopping distance, increasing the risk of a crash.


## The remedy

PACCAR will notify owners, and dealers will replace the standard rear\-brake, ABS modulator valve with a quick release valve, free of charge.  The recall began November 30, 2020.  Owners may contact PACCAR customer service at 1\-425\-828\-5888.  PACCAR's number for this recall is 20KWD.


## 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.


## Remedy progress the manufacturer reported

- Report: Annual report 3, for 2024 quarter 4 to 2025 quarter 3
- Filed with NHTSA: 2025\-10\-30
- Vehicles in the campaign: 1416
- Reported remedied: 1127 \(79%\)
- Reported unreachable: 0
- Reported removed: 0

These are the manufacturer's totals for the whole campaign at the end of 2025 quarter 3, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026\-10\-19.

## Vehicles this campaign lists

- [2016 KENWORTH T680](/makes/kenworth/t680/2016/recalls.md)
- [2017 KENWORTH T680](/makes/kenworth/t680/2017/recalls.md)
- [2018 KENWORTH T680](/makes/kenworth/t680/2018/recalls.md)
- [2019 KENWORTH T680](/makes/kenworth/t680/2019/recalls.md)
- [2020 KENWORTH T680](/makes/kenworth/t680/2020/recalls.md)
- [2021 KENWORTH T680](/makes/kenworth/t680/2021/recalls.md)

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

JSON: [/v1/recalls/nhtsa/20V593000](/v1/recalls/nhtsa/20V593000)

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