Purpose of the System: Hardware: Notes
The instrument cluster is designed as a complete integrated component and secured to the dashboard with three screws. It is connected to the vehicle communication system via the data buses: K-CAN System and MOST.
The display of road speed and engine speed is by means of pointer instruments. The pointers are moved by stepper motors. The pointers move over an LC display.
The fuel and temperature gauges have been deleted from the instrument cluster and are now an On-Board Computer and Check Control display respectively.
The scale and labeling of the tachometer and speedometer are printed on a frame and placed over the LC display. The legally required displays are in the form of fixed-position, standardized indicator and warning lights. The indicator and warning lights are arranged between and next to the pointer instruments.
The indicator and warning lights as well as the back light of the LC display use single color and multi-color LEDs. The light emitting diodes are designed to last the service life of the vehicle and cannot be replaced.
All other displays and messages (e.g. those of the on-board computer) are represented on the LC display, which is visually divided into six display fields by the frames of the pointer instruments.
The control unit is integrated in the instrument cluster. The control unit consists of a high-performance 32-bit computer for the display and lighting as well as the BC and CC functions. Another 8-bit computer is responsible for activation of the pointer instruments and the fixed-position indicator and warning lights.
A memory of 4MB for the U.S. instrument clusters is used to store the language and units variants. Language and units can be changed using the Control Display.
The following languages and units are stored in the language memory (4 MB) of the instrument cluster: