• Connect a battery maintainer to car
  • Bridge DLC pins 4 and 13 with a wire or paper clip
  • Turn the ignition to the "ON/RUN" position (do not crank)
  • Leave key in the "ON/RUN" position for 35 minutes
  • Turn the ignition "OFF" and remove key
  • Remove the bridged connection between DLC 4 and 14

ECU and immobilizer smart box should be paired now.