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Service bulletin TT 91-16-12

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 id10123378
Published by NHTSA2017-11-14
Manufacturer's numberTT 91-16-12
Manufacturer's date2016-09-30
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

Update to include model year 2017. Information addressed correction to test plan information to address loading of SWaP keys into a new 5F module.

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 BEETLE2016, 2017
VOLKSWAGEN CC2016, 2017
VOLKSWAGEN JETTA2016, 2017
VOLKSWAGEN PASSAT2016, 2017
VOLKSWAGEN TIGUAN2016, 2017

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

Other bulletins for the same vehicles and component
TT 91 24 012024-02-06. Service bulletin. Addressing Cybersecurity or Vehicle Hack concerns
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VOS-23-142023-07-10. Service bulletin. This communication is a notice for software changes with the ODIS program for specific cars
VOS-22-272022-07-01. Service bulletin. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
VOS16032022-06-13. Service bulletin. Release Notes Supplement.
VOS16022022-06-13. Service bulletin. Mandatory Installation from Web-Server.
VOS16012022-06-13. Service bulletin. Mandatory Installation from Web-Server.
VOS-22-072022-03-04. Service bulletin. "Instructional document regarding the installation of a hotfix for the ODIS service software. Hotfix is to be used during the following actions: Brake Electronics (ABS) A3 Passat NMS Software Configuration/Coding
A0021552011732122022-01-05. Service bulletin. This bulletin contains general instructions for software updates.