OBx Installation Guide — OneRoad

OBx Device · Setup Guide · Fleet Managers

Get your fleet connected
in three simple phases

Follow the steps below to create your OneRoad account, register your vehicles, and pair each OBx device. The whole process takes around 15–20 minutes.

Phase 1 of 3

Create your OneRoad account

Completed at app.oneroad.io in your browser · approx. 5 minutes

Account creation must be completed in a web browser on a desktop or laptop. It cannot be done in the mobile app.

Go to app.oneroad.io in your browser

Open app.oneroad.io in your web browser and click Sign Up. When prompted to choose a user type, select Fleet Owner.

This step is critical. Selecting Fleet Owner unlocks fleet management, vehicle registration, and OBx device pairing. Do not select Driver or Owner Operator.

Enter your company details

Fill in your company's Trading Name and ABN, along with your Company Email Address and Company Phone Number. Tap Continue when done.

Licence details — for Fleet Owners who also drive

You will be asked whether you want to add your driver's licence details. This is only required if you, as the Fleet Owner, also intend to drive vehicles within your fleet. If not, select No to skip this step.

Licence details can be added or updated at any time from your account settings.

Phase 2 of 3

Register your vehicles in the portal

Completed in the OneRoad web dashboard · must be done before installing any devices

Before installation of any OBx device can begin, all vehicles must first be registered within your OneRoad portal. This ensures each device can be correctly assigned to a vehicle during pairing.

Log in to your OneRoad dashboard

Go to app.oneroad.io and sign in using your mobile number. Enter the SMS verification code to access your dashboard.

Navigate to Fleet → Assets

In the top navigation bar, click Fleet. On the Fleet page, click the Assets tab.

Click "+ Add Asset"

In the top-right corner of the Assets tab, click + Add Asset. Enter your vehicle's registration number to search for it.

Add Asset screen — registration search

Screenshot pending

Confirm and add to your fleet

OneRoad retrieves the vehicle's registration details automatically. Review the Vehicle Found screen — plate number, body type, model, and registration expiry. If correct, tap Add Asset to Fleet.

Add all vehicles receiving an OBx device before moving to Phase 3.

All vehicles registered? You are now ready to connect your OBx devices.

Phase 3 of 3

Install and pair your OBx devices

Physical installation + app pairing · repeat for each vehicle in your fleet

Stop first

Complete these safety checks before touching any hardware

Park the vehicle safely. The vehicle must be stationary and securely parked. Do not attempt installation while the vehicle is in motion or in operation.
Check the vehicle is in good working order. Start the vehicle briefly and confirm there are no dashboard warning lights. If any faults are present, do not proceed until resolved.
OBD-II port is undamaged. Confirm the port connector is intact with no bent or missing pins. Do not proceed with a damaged port.

Vehicle adapter guides

Some vehicles require an adapter to connect the OBx to the diagnostic port. Download the relevant guide for your vehicle type before beginning installation. If unsure, contact support@oneroad.io.

Adapter Guide — Type 1

Heavy vehicles · 9-pin J1939

Adapter Guide — Type 2

Light / medium · OBD-II direct

Step-by-step hardware installation

Locate the OBD-II port

The OBD-II diagnostic port is typically found on the driver's side of the dashboard or instrument panel. In heavy vehicles it may be on the dash face near the centre console. Check your vehicle's manual if unsure.

Plug in the OBx device — ignition OFF

With the ignition off, firmly plug the OBx into the OBD-II port. The connector is keyed — it only inserts one way. Push until you feel it click securely into place.

Turn ignition ON

Turn the ignition to the ON position to power the OBx. The engine does not need to be running — ignition-on is sufficient to supply power to the port and activate the device.

Do not start pairing in the app until the ignition is on and the device has had 15–30 seconds to initialise.

If any new dashboard warning lights appear after plugging in: turn off the ignition immediately, remove the OBx, and contact support@oneroad.io before attempting reinstallation.

Confirm the device is active — flashing blue light

Once powered, the OBx indicator light will activate. A flashing blue light confirms the device is live and ready to pair.

Light	Status	Action
Flashing Blue	Device active	Proceed to pairing
Solid Green	Already paired	Verify in portal
Red / No light	Error / no power	Contact support

Secure the device with a cable tie

Once the OBx is paired and confirmed active, use a cable tie to secure the device and any excess cabling neatly under the dashboard. Ensure the device and cable are kept clear of all vehicle controls — including pedals, the steering column, and airbag panels.

Safety requirement: Regularly inspect the device and cable tie to confirm it remains secure. Under Australia's Chain of Responsibility legislation, operators are accountable for ensuring all equipment fitted to vehicles is safe and does not interfere with vehicle operation.

Pairing via the OneRoad app

Log in to the OneRoad mobile app

Download and open the OneRoad app on your iOS or Android device. Sign in using the mobile number you registered with.

Open your Profile

From the home screen, tap Profile in the bottom-right corner of the screen.

Open the Options Menu and select Devices

Tap the Options Menu — the icon showing four small squares. Scroll down until you find Devices and tap it.

Ensure Bluetooth is enabled on your phone — the app uses Bluetooth to detect the OBx during pairing.

Tap "Add new device to your fleet"

In the Devices screen, tap Add new device to your fleet. The app will begin searching for nearby powered OBx units.

Select the correct vehicle registration

Once the app detects the device, it will display the registration details. Select the correct registration from the list and tap Continue.

Device assignment is permanent. Once an OBx has been paired to a vehicle, it must remain in that vehicle. Moving a paired device between vehicles may cause ECU interactions and will void the pairing.

Wait for pairing to complete

The device will pair automatically. Keep the app open and your phone within 1–2 metres of the vehicle. Once complete, the screen confirms the device has been successfully paired to your fleet.

Pairing success confirmation screen