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Service bulletin Dealer Letter -

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 id10123960
Published by NHTSA2017-11-17
Manufacturer's numberDealer Letter -
Manufacturer's date2013-04-30
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This communication is to inform you of Update 39E1. Enhance the power distribution when accelerating from stop. Update the software for the all-wheel drive control 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, Transmission and driveline, Software

Vehicles listed
AUDI TT ROADSTER2012 to 2013

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