With a simple wireless dongle that plugs into the OBD2 Code Scanners port underneath the dash of your car, you can create an access point where your iPhone can communicate with your car’s computer to receive data and statistics. The concept isn’t new, but the technology continues to mature and become more reliable as time goes by.
The LELink Bluetooth Low Energy OBD2 Diagnostic Tools is just one example of many dongles that do this, but after careful examination of customer reviews on Amazon, I selected this model because it seemed to be one of the best models out of the bunch with the highest amount of satisfied customers.
I would recommend a Bluetooth-style dongle over a Wi-Fi style one since the pairing is much simpler and the impact on the battery of your iPhone will be a lot less.
After you plug it in, the red light indicating that a power connection has been made should turn on, and now you can unlock your iPhone and power up the OBD Fusion app to start pairing the device to your iPhone. As you access it, green and yellow lights will flash to indicate data transfer between the devices.
Note: Although it’s a Bluetooth device, you do not pair it with your iPhone from the Bluetooth settings on your iPhone. Instead, you will launch the OBD Fusion app from your Home screen and connect to the dongle from the app.
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