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Service bulletin Circular 91U8

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 id10163373
Published by NHTSA2019-08-06
Manufacturer's numberCircular 91U8
Manufacturer's date2019-07-18
NHTSA componentEQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

SERV_ACT - Infotainment System Software - Security Patch

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, Equipment and accessories, Software

Vehicles listed
VOLKSWAGEN EGOLF2016
VOLKSWAGEN GOLF R2016, 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
V0118122014603192023-07-10. Service bulletin. Software Version Management (SVM) instruction.
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.
VW87160220401842022-06-13. Service bulletin. Climatronic with Heat Pump - Sporadically Too Low Heating or Cooling Performance.
A0021552011732122022-01-05. Service bulletin. This bulletin contains general instructions for software updates.
V0019042054866_42021-09-02. Service bulletin. SD creator instruction, updated to include model year 2022.
V0118122014603172021-07-02. Service bulletin. Software Version Management (SVM)
V0019042054866_22021-01-08. Service bulletin. Instruction on how to create S/D cards used to update programming on various control modules.