Service bulletin Circular24GBREV1
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10181978 |
| Published by NHTSA | 2020-11-05 |
| Manufacturer's number | Circular24GBREV1 |
| Manufacturer's date | 2020-10-29 |
| NHTSA component | ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ELECTRICAL SYSTEM:SOFTWARE |
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. Update to vehicle count and updated claiming instructions due to additional criteria X4.
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, Exhaust manifold, pipes and muffler, Software
| VOLKSWAGEN TIGUAN | 2018, 2019, 2020 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
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