This box is compatible with EDC15 (diesel) and ME7 engine control units. The EDC15 control unit for diesel engines is used in certain vehicle models from 1999 onwards. The ME7 control unit for engines 1.6L and above is also supported. Additional supported control unit types include ME7.5, ME7.5.1, ME7.1, and ME7.1.1. Usage instructions: Plug the EDC15/ME7 box into the vehicle's OBD2 diagnostic port. Switch the OBD2 drive box to "OFF". Within approximately 20 seconds, the immobilizer will be deactivated (IMMO OFF). No computer connection is required. The LED on the device will initially flash slowly, then rapidly, indicating the immobilizer function has been disabled. The vehicle can be operated without a transponder key. To restore the immobilizer function: Switch the drive box back to "ON". Within approximately 20 seconds, the immobilizer will be reactivated (IMMO ON). Compatible with select vehicle models equipped with Motronic EDC15 (diesel) or ME7 engine control systems. Not compatible with 1.8T, 2.0TFSI, 1.4, or 1.6 engine models. This tool is intended for professional use by authorized automotive technicians. Material: Plastic Color: Black Package Contents: 1 x OBD2 Drive Box Note: The package includes only the items listed above. Other products are not included. Lighting and display settings may cause slight variations in the color appearance of the item. Measurement may have a tolerance of +/- 1-3 cm.