# Vehicle Serial Number

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="/files/Eae8Z2JPXcMTOFopfw82" 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 %}


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