Exterior lighting

As the master control unit, the Front Electronic Module (FEM) is responsible for the functions of the exterior lights. It decides which lighting functions need to be activated or deactivated and transmits this information to the Rear Electronic Module (REM) via K-CAN2. In turn, the Rear Electronic Module (REM) reports the status of the respectively activated function to the Front Electronic Module (FEM).

The exterior vehicle lights are automatically controlled via several input signals and can be switched on or off manually via the light operating facility. The LED turn indicators in the exterior mirror are a new feature. They replace the turn indicators in the side wall.

The exterior lights comprise the following functions:

• Side lights
• Daytime driving lights
• Low-beam headlights
• High-beam headlight
• Headlight flasher
• Headlight beam throw adjustment
• Turn indicator
• Side marker lights
• Fog light (cornering light)
• Automatic driving lights control: After driving through a tunnel or driving out of a garage, the driving light can remain switched on for up to 2 minutes. This is not a fault but rather a desired function so that the light is not being continuously switched on and switched off again.