1. Electronic speedometer. The electronic drive of the speedometer, in contrast to the traditional mechanical drive with a cable, allows for greater accuracy of readings. This primarily concerns the lower speed range: conventional speedometers start working only from a speed of 20 km / h. The device installed on the E-class models shows the speed from 1 km/h and thus facilitates the reading of the readings, for example in places with a significant speed limit. The speedometer receives data from the ABS control unit. In turn, it processes information from the sensor on the left front wheel. Information about the distance traveled is reflected on the liquid crystal display. The data is stored in the ROM memory of the instrument cluster when the ignition is turned off or the terminal is removed from the battery. If, in the absence of a key in the ignition lock, press the button on the lower left side next to the speedometer, the indications of the distance traveled, temperature and time will appear on the liquid crystal indicators for about 30 seconds.
2. Fuel gauge. Fuel level information received from both parts of the fuel tank (according to the resistance value of the lever sensor) reflected in the instrument cluster. In case of malfunctions, the fuel gauge shows «tank empty», the fuel reserve warning light is off.
3. Tachometer. The signal is taken by a sensor from the engine flywheel and converted in the Motronic system controller from sinusoidal to linear.
4. Instrument lighting. The so-called light pressure technique is used, when the lighting is turned off, the maximum brightness of the instrument lighting is achieved.
5. Control and signal lamps. Located on the side in the corners of the instrument cluster. Regardless of the modification, lamps are installed, which, if necessary, can be replaced.
6. Oil pressure gauge. This previously familiar pointer is missing. The oil pressure is controlled indirectly by the oil level.
The electronic board of the instrument cluster can only be replaced completely, with the exception of the ambient temperature gauge (SA). The board is held on latches. Symbols of control lamps depending on model of the car have various execution.