Dimming of the instrument cluster

The brightness of the liquid-crystal display and all indicator and warning lights is adapted to suit ambient lighting conditions. This function is implemented by a phototransistor in the instrument cluster.

The brightness signal is calculated in the instrument cluster on the basis of the following values:

• Signal from the phototransistor (ambient luminosity)
• Dimmer signal (on the control panel for the lights)

The brightness signal calculated in this way is made available to the other control units via the K-CAN.