We've been working on this diagnostic tool for quite some time with the goal of making remote vehicle diagnostics simpler and more accessible for everyone. Our main idea was to help technicians and enthusiasts use their existing aftermarket diagnostic tools to connect to vehicles remotely — just as if they were sitting in the workshop next to the car.

The system is entirely software-based, but it also supports optional hardware devices that enable more advanced communication with the vehicle using CAN bus technology . With the complete setup, you can work over CAN bus , Ethernet , and even perform EEPROM read/write operations on certain modules through Bench mode.

At the moment, the system operates in a peer-to-peer mode — which is why port forwarding is required. This architecture ensures minimal latency and direct communication between the two sides. In the future, we plan to introduce a subscription-based server platform that will handle the connections automatically, making setup much easier.

Our goal is to provide a reliable and flexible solution for workshops and independent technicians who want to diagnose, code, and program vehicles remotely without complex configurations.

--SETUP--

When you first launch the app, it will ask for an ID and a password . These credentials are sent by email to the address associated with your PayPal account after purchase. If you don't see the email, please check your spam or junk folder as well.

You'll need to enter these credentials into the app. After that, you can change your ID once and only once to whatever you prefer. Make sure it's something meaningful, because your clients will need this ID to configure their own app and establish communication with you.
To change your ID, go to Settings → Change ID .

Inside the app click “ Settings“ , there's a status box showing your network status. If it says “Windows UPnP OK” , that means everything is set up correctly and you don't need to do anything else. If it doesn't, you'll see the IP address and port numbers that need to be added to your router's port forwarding settings. You may also see information about the server UPnP or the 1237 port — these are used for CAN bus communication. You can safely ignore them when setting up your network.

To make sure the application can communicate properly over the network, your router needs to allow access through specific ports. There are two ways to set this up, depending on whether your router supports UPnP (Universal Plug and Play) .

Option 1 – Enable UPnP (Recommended)

The easiest way to get started is by enabling UPnP on your router. This allows the application to automatically open the required ports without manual configuration.

How to enable UPnP:

1. Open your router's web interface . You can usually do this by entering your router's IP address in your browser - for example, 192.168.0.1 or 192.168.1.1.
2. Log in with your administrator username and password.
3. Go to a section such as Advanced , Network , or NAT Forwarding (the exact name depends on your router model).
4. Find the UPnP setting and switch it ON .
5. Save the changes and restart your router.

After that, start the application. If everything is working correctly, i nside the app click “ Settings“  and  you'll see a message saying “UPnP OK” — this means the connection was set up automatically and no further steps are needed.

Option 2 – Manual Port Forwarding

If your router doesn't support UPnP, you can still make the application work by setting up manual port forwarding .

Steps to set up port forwarding:

1. Open your router's web interface (for example, go to 192.168.0.1 in your browser).
2. Log in with your admin credentials.
3. Look for a section named Port Forwarding , NAT , or Virtual Server .
4. Add two new rules with the following settings:

After saving the changes, restart your router. Once done, start the application — it will now use the manually forwarded ports if UPnP is not available.

Firewall Notice

Make sure that no third-party firewalls  are blocking the app's network access.  If you're using any, temporarily disable them or create an exception for the application in your firewall settings.

Connecting a Client

When the application starts and you reach the CAN Bus Device section, click the “Skip” button. This device is an additional feature of the app that will be available later through a subscription, so for now it can be skipped.

After skipping, you'll see a field labeled Client ID . When customer launches the application, their ID should appear in the list. Select the desired ID from the list to connect to that client.

Important: Do not run both applications on the same computer. Each instance must run on a separate device in order for the connection to work properly.

Communication Modes

By default, the application starts in BMW ENET mode. This mode requires no additional setup.

The application also supports VAG DoIP and BMW ICOM communication modes. You can switch between these modes in the Settings menu by using the corresponding toggle switches.

Make sure to select the correct communication mode that matches your connected vehicle before starting the connection.

Virtual Network Adapter

The application runs a virtual network adapter in the background. By default, this adapter uses the IP address 10.10.1.1, which represents the vehicle's local IP address. This is the address that all diagnostic tools will recognize as the car's network interface.

The IP address of this adapter can be changed manually if needed. Some diagnostic tools only work with addresses in the 169.254.x.x range, so you can adjust the adapter's IP to match those requirements. Be careful not to set an address that conflicts with another network adapter on your system — if a conflict is detected, the application will notify you automatically.

Broadcast Mode

At the top of the application window, you'll find a Broadcast button. When enabled, this mode makes the communication available across your entire local network.

For example, if the main application is running on one computer, and another device is connected to the same local network, that second device can also connect to the vehicle through the network. In this case, the connection should be made to the IP address of the main computer on the local network.

If broadcast mode is turned off, diagnostic tools must be run on the same computer where the main application is running, since the connection will not be visible to other devices on the network.

WARNING: Only enable broadcast mode if you actually intend to access the car from another machine. If you run the tools on the same computer while broadcast mode is enabled, some tools may not function properly.
 

Car Detect

The Car Detect button is available only for ENET and DoIP communication modes.
When enabled, other diagnostic tools can automatically discover the vehicle — including its IP address , VIN , and MAC address — using standard automotive discovery protocols.

Client-Side Application