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Service bulletin 13-059

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10208772
Published by NHTSA2022-03-04
Manufacturer's number13-059
Manufacturer's date2022-02-17
NHTSA componentPARKING BRAKE; ELECTRICAL SYSTEM

NHTSA's summary

On certain Model Year 2023 chassis with manual transmissions, the optional “Audible Alarm when Door is Open and Park Brake is not set” feature operates incorrectly due to a software issue. The software will be corrected when available

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Electrical system, Parking brake

Vehicles listed
KENWORTH T6802022
KENWORTH T8802022
KENWORTH W9902022

Listing a model year does not mean every vehicle of it is concerned: the document says which.