The seat occupancy mat is a sensor mounted in the front passenger seat. The emulator simulates a person sitting in the passenger seat with a seat belt fastened. To use the emulator, a diagnostic tool is required to clear stored fault codes related to a faulty seat mat from the control unit. After connecting the emulator, use the diagnostic tool to clear existing errors and deactivate the SRS warning light. Note that safety system-related fault codes do not clear automatically. Before purchasing, scan your vehicle with a diagnostic tool to confirm the SRS warning is caused by a defective seat occupancy mat. Name: Car Seat Occupancy Mat Sensor SRS Bypass Emulator Fitment Type: Direct Replacement Condition: New Type: 3+2 Pin, Dual-Head Fitment: Compatible with Mercedes-Benz C-Class W203 Sedan (2000–2004), pre-facelift models Color: As shown Material: Plastic Package Contents: 1 x Car Seat Bypass Emulator Sensor Note: Color may vary slightly due to screen settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 cm.