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 , for , for 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 be to remove old errors and turn off the SRS/ warning. Unfortunately, the errors related to the 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 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 Before Purchasing! Colour:As Shown Material:plastic Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * Car Seat Occupancy Mat Sensor Only the above package content, other products are not included. Note: Light reflection 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.