> For the complete documentation index, see [llms.txt](https://docs.auterion.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.auterion.com/hardware-integration/additional-resources/remote-id/vehicle-serial-number.md).

# Vehicle Serial Number

How the vehicle Serial Number for RemoteID is generated

As of AuterionOS 2.5.5, the vehicle's default serial number in Remote ID uses Auterion's registered manufacturing code, followed by a single character indicating the length of the device serial number, followed by the device serial number itself.

The device serial number corresponds to the **Vehicle serial number** string set in the Auterion Suite:

<figure><img src="https://3329189600-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FFW1Ge1p1f6WHyiYCb146%2Fuploads%2Fgit-blob-4f49393041c11270cf536c26166fef895fdc8afb%2FScreenshot%202025-03-21%20at%2014.41.51.png?alt=media" alt=""><figcaption></figcaption></figure>

The **Vehicle serial number** string can be configured by the manufacturer up vehicle's activation.

| Bit Position | Example Content | Meaning                                                                                                                                                                      |
| ------------ | --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 0-3          | 1726            | <p>Manufacturer code.<br>Every manufacturer needs to <a href="https://www.icao.int/publications/DOC8643/Pages/Manufacturers-Codes.aspx">request a manufacturer code</a>.</p> |
| 4            | 9               | The length of the Vehicle serial number, in Hexadecimal format.                                                                                                              |
| 5-13         | 123456789       | <p>Vehicle serial number<br>Max Length 16 digits.</p>                                                                                                                        |

The resulting vehicle serial number from the example above looks like: `17269123456789`

In AuterionOS 2.7 OEMs are able to override the manufacturer code with a custom value, in addition to configuring an extra custom ID. See the following page for more details:

{% content-ref url="/pages/6wGBBH4GJ01UVAI10s9F" %}
[Remote ID configuration](/hardware-integration/additional-resources/remote-id/remote-id-configuration.md)
{% endcontent-ref %}