100% brand new and high quality 20-pin socket service reset tool. Plug the device into the car's 20-pin diagnostic socket located in the engine compartment. Turn the ignition key to activate the vehicle electronics but do not start the engine. Press and hold the button corresponding to the operation you want to perform. The LED for the selected operation will light up. Keep the button pressed. The reset is complete when the LED turns off by itself. Release the button. On some dashboards, it is necessary to perform an inspection reset. : 1986-2001 for E30 E36 (3 Series) 1989-2001 for E34 E39 (5 Series) 1996-2001 for E38 (7 Series) Color: Black Material: ABS Package Contents: 1 x Car Diagnostic Detector Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.