Cars are rapidly becoming more complex and with that the amount of software is increasing as well. For each function in the car, multiple components have to work together closely. To cope with the complexity of automotive software a standardized software architecture is developed: Autosar. We are developing a system to wirelessly charge vehicles and we will present the challenges that have to be faced. Next to that we show how we use Autosar and other design methodologies to cope with the system's complexity.