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Service bulletin Dealer 24GB

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 id10180090
Published by NHTSA2020-10-06
Manufacturer's numberDealer 24GB
Manufacturer's date2020-09-15
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

Volkswagen is providing an Engine and Transmission Control Module (ECM/TCM) software update to address elevated tailpipe emissions that were found during vehicle testing. This software will also improve drivability and provide other diagnostic improvements.

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, Engine, Exhaust and emissions, Transmission and driveline, Automatic transmission, Exhaust manifold, pipes and muffler, Software, Transmission control module

Vehicles listed
VOLKSWAGEN TIGUAN2018, 2019, 2020

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

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