YueYueZou&reg; Auto Diagnostic SI Reset Tool For Vehicles Cars OBD2 Airbag Inspection Oil Service Workable Model: BMW build 1982-2002 with 20 pin diagnostic socket located in the engine compartment Functions: Reset Inspection and Oil Service Operating Package Contains: Service Intervall Reset Unit with diagnostic connector Plug the Device into the 20 pin diagnostic socket of the car located in the engine compartment;Turn ignition key to enable the board electronic but don`t turn on the motor;Press the button for the operation you want to perform and keep it pressed The LED of the choosen operation will be on;Keep the button pressed Reset is done when the LED is turning off itself;Release button On some dashboards there is needed to make a inspection reset before a oil reset