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Service bulletin 39E1UPDATE

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 id10249103
Published by NHTSA2024-01-22
Manufacturer's number39E1UPDATE
Manufacturer's date2013-05-01
NHTSA componentPOWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

NHTSA's summary

All-Wheel Drive Control Module Software Update (NVLW)

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

Transmission and driveline, Transfer case

Vehicles listed
AUDI TT2012
AUDI TT RS2013

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