Here is a new customer test report for OBDSTAR Odo Master on Mazda 3 2012 mileage correcton.
Connect OBDSTAR ODO Master to Mazda 3 obd port,then enter menu to select “Mileage Calibration”
Check the massage,then click “Enter” to continue
Follow the screen prompt massage to turn off the ignition and then turn the ignition on
Please confirm the mileage correctly and press ENTER to continue
Now input the mileage of the Calibration “114000”
Please turn off the ignition and then turn the ignition on