> 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 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:
The **Vehicle serial number** string can be configured by the manufacturer up vehicle's activation. | Bit Position | Example Content | Meaning | | ------------ | --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 0-3 | 1726 |

Manufacturer code.
Every manufacturer needs to request a manufacturer code.

| | 4 | 9 | The length of the Vehicle serial number, in Hexadecimal format. | | 5-13 | 123456789 |

Vehicle serial number
Max Length 16 digits.

| 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 %}