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Service bulletin VVT-14-20

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 id10120305
Published by NHTSA2017-10-21
Manufacturer's numberVVT-14-20
Manufacturer's date2014-09-24
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

Service Information (VAS Diagnostic Device Hard Disc Maintenance): If persistent diagnostic software or Windows® 7 operating system error messages are displayed while installing or using the diagnostic software, This document informs of using the Windows CHKDSK utility to check hard disk integrity and fix logical file system errors. CHKDSK can also handle some physical errors and may be able to recover lost data that is readable.

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

Electrical system, Software

Vehicles listed
VOLKSWAGEN VOLKSWAGEN

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