Step 1: Write down the WiFi Key


The factory default WiFi Key is found on bottom of device, is case-sensitive, and includes periods.

MXWF bottom label

Step 2: Download OBDwiz

This step will require your PC to be connected to the Internet.

Download and install the latest version of OBDwiz.

Step 3: Locate the OBD-II diagnostic connector in your vehicle

The diagnostic connector is always located in or near the interior dashboard of your vehicle. The diagnostic connector will usually be exposed, but sometimes it's hidden under a decorative plastic cover, or behind an ashtray or coin tray. The most common location is below the steering column, just below the driver's dash area.

DLC icon

Step 4: Plug OBDLink into your diagnostic connector

Don't use excessive force, but make sure it fits snugly.

OBDLink MX Bluetooth is used in the above video, but the process is the same for all OBDLink devices.

Once plugged in, the 'Power' LED will turn solid green.

For Wi-Fi models, the 'Wi-Fi' light will emit a flash every 3 seconds.

Step 5: Turn ignition key to the 'ON' position

On some vehicles the 'ON' position is marked with the Roman numeral 'II'. If there are no markings, turn the key clockwise and stop just short of starting the engine.

Vehicles with push button start: press the button without stepping on the brake pedal.


Step 6: Connect PC to OBDLink MX via Wi-Fi

Open the Windows System tray and right-click on View Available Wireless Networks.

View available networks

Select OBDLink MX from available networks, click Connect.

Choose OBDLink MX from networks

When prompted, enter the WiFi Key your wrote down in Step 2 in the Network key field. Confirm network key and click Connect.

Enter password into network key field

OBDLink MX will be listed as Connected on the list of wireless networks:

OBDLink connected

Step 7: Connect to your vehicle with OBDwiz

From Windows Start menu, open OBDwiz. On the Setup screen, select Wifi from the Communication Type drop-down list:

Communication type

OBDwiz default TCP/IP settings work with OBDLink MX Wi-Fi factory settings. Click Connect.

Connect wifi

OBDwiz will cycle through all legislated OBD-II protocols and detect which is used by your vehicle. A status screen will indicate progress of the automatic protocol detection:

Connecting protocols

On many vehicles, there are multiple on-board computers (ECUs) that reside on the OBD-II network.


Since OBD-II protocol dictates that you can only connect to one ECU at a time, it's recommended you connect to the ECU reporting the most Supported PIDs first (you can always re-connect and select an alternate ECU). Click 'Continue'.

Step 8: Accessing Data

OBDWiz can diagnose 'Check Engine' trouble codes, monitor real-time vehicle performance, check emissions readiness, log trips and much more. To begin exploring these capabilities, click on a task along the left-hand side of the main screen:


Each task has multiple tabs that provide more specific information or actions associated with the selected task:


Below each tab, you can click on a specific action button: