So I managed to get rid of the ERR1 on my odometer by holding both buttons and cycling the key. Push the left button and display a d and a b. Pushed the d and it seems to log pulses as I go down the road. When it hit my 96,234 to match the trip tek Milage I cycled the key again and presto. It now shows 799,623 miles;((((. How do you reset it??