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Service bulletin TT 48 20 01

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 id10171800
Published by NHTSA2020-03-05
Manufacturer's numberTT 48 20 01
Manufacturer's date2020-02-14
NHTSA componentELECTRICAL SYSTEM:STARTER ASSEMBLY; EQUIPMENT

NHTSA's summary

Remote start diagnostic information.

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, Starter

Vehicles listed
VOLKSWAGEN ATLAS2018, 2019, 2020
VOLKSWAGEN TIGUAN2018, 2019, 2020

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
QT extrange_inst2020-03-05. Service bulletin. Information on the installation of remote start and extended range.
QT_ext range2020-03-05. Service bulletin. Information on the installation of remote start and extended range.