Genuine OEM Audi Online Service Calculator, part number 5WA035286. This electronic module is responsible for calculating and storing service intervals and data for the vehicle. It plays a role in the vehicle's maintenance tracking system. It is typically integrated into the vehicle's infotainment or body control systems. Genuine OEM modules are programmed with the correct software and specifications to ensure accurate service reminders and data logging, maintaining the vehicle's service history and optimal performance.