The Seat Occupancy Mat Is A Sensor Mounted In The Front Passenger Seat. The Emulator Simulates A Situation Of A Person Sitting In The Passenger Seat With A Seat Belt Fastened. To Make The Emulator Work You Need A Diagnostic Tool (like For Autel, For , For Icarsoft Etc.) To Remove Old Errors Of A Broken Seat Mat That Are Stored In The Control Unit. Once You Connect The Emulator Your Diagnostic Tool Will Be Able To Remove Old Errors And Turn Off The Srs/ Warning. Unfortunately, The Errors Related To The Safety Systems Are Not Removing Automatically. Before Purchase, Please Scan Your Car With A Diagnostic Tool To Make Sure Your Srs/ Warning Is Caused By A Defective Seat Mat. For European Models And 3 Wired Seat Mat. If You Have A 2 Wired Mat You Will Need A Different Emulator. (compatible With All Variants: Coupe, Estate, Convertible, Saloon, Hatchback, M-power) 5 Series E60/e61 (2005-2010) - Models With Remote Key Fob The Compatibility Is Just For Please Compare The Part Number With Your Original One Befo