One of our customer failed to read eeprom when adjust mileage for his Toyota Corolla. He has Tacho Pro U2008 odometer correction tool in hand. Here is the solution provided by obd365.com engineer. Adjusting KM for Corolla procedure he carried out:Select car model: CorrollaSelect car type: C46Select function: Read EEPROMCable connection as below:Solution:Check if your cable connection is correctlyYou should choose “Adjust KM” function option instead of “Read EEPROM” if you need to change KM with tacho pro.http://blog.obd365.com/2016/05/03/tacho-pro-failed-to-adjust-toyota-corolla-km/

How to change Toyota Corolla KM with Tacho Pro