With your car parked in an open area with cellular network coverage, and your engine off, examine the underside of the dashboard for the OBD-II port. The location of the OBD-II port can vary with each vehicle, but it is most commonly found in the knee area near the steering column.
Carefully align the OBD-II device to your vehicle’s OBD-II port. Slide firmly into place and fully secure it without twisting or forcing.
After all three device lights turn on and then off, wait one minute before turning on the ignition.