Service bulletin A21030B
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 | 10189039 |
| Published by NHTSA | 2021-03-16 |
| Manufacturer's number | A21030B |
| Manufacturer's date | 2021-03-10 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
ServiceNews Article - If you are diagnosing a failure in a telematic control unit (TCU), never swap it with another from a donor vehicle. Swapping TCUs between two vehicles can cause communication issues with American Honda's cellular providers.
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
| HONDA HONDA |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.