OBD2 OBDII SI-Reset Inspection and Oil Service Tool For BMW E46 E39 X5 Z4 Feature: 1.Brand new and high quality2.Small and easy to carry3.Plug and play, no batteries required 4.Automated Service reset tool for all BMW models with OBD2 connector in the passenger compartment without CAN-bus / I-drive system5.Suitable for over 75 different BMW and MINI models with OBD2 diagnostic socket from build 2000, such as BMW E39,E46, E50, E52, E53, Mini ,E38, X5, Z4. Instructions: 1.Plug the device into the OBD2 socket of your car; 2.All LEDs will flash and hen stay on;3.Turn ignition key to enable the board electronic but don't turn on the motor; 4.Press the button for the operation you want to perform;5.The LED of the choosen operation will turn on and the other LEDs will be off; 6.LEDs will perform a light chain which means reset is done. NOTE: On some vehicles the Inspection needs to be reset before the Oil service will reset.Package Includes: 1 x SI-Reset BMW OBD2 Service Reset Unit with diagnostic connector