1) Turn the ignition on. Do not start the engine. Cycle your trip reset knob until you it reads ODO. Turn the ignition back off.
2) Make sure the driver seatbelt is not fastened.
3) Turn the ignition back on. Do not start the car . As soon as you see everything light up, press and hold the trip reset knob and do a 20 second count.
3) Keep your finger on the trip reset knob. Fasten the driver’s seat belt. As soon as you fasten the seatbelt, you should see the ODO display go from XXXX miles to "b-on". At that time, take your finger off the trip reset knob and press it again. It should cycle to "b-off". You should be all set and turn the ignition off and unfasten your seat belt.
After you next disconnect your battery, you will have to redo this procedure, similar to the auto door lock and radio settings, so bookmark or print this out.