The number of electronic control systems applied in vehicles has increased dramatically over the years. This trend will only continue with the introduction of novel technologies such as advanced driver assistance systems (ADAS). To save cable weight and costs in-vehicle control systems often use shared communication networks. With the increasing use of in-vehicle control systems the scheduling of these networks becomes a serious challenge. In this master thesis a new event-triggered approach for the scheduling of networked control systems (NCSs) using timed game automata (TGA) is considered. This new approach yields some potential benefits over existing communication protocols and has already been implemented successfully on two-dimensional linear time-invariant (LTI) systems. To obtain the control system TGA for this scheduling approach the NCSs have to be abstracted. The control system abstraction method that is used has to be modified in order to be able to handle higher dimensional systems as well, and that is exactly the focus of this master thesis. The abstraction method is extended and applied to three-dimensional and four-dimensional in-vehicle LTI control systems. The outcomes are checked using simulations which show that the applied abstraction method works.