Automatic headlight beam throw adjustment

As standard, vehicles with LED headlights have automatic headlight beam throw adjustment to compensate different load statuses of the vehicle.

The automatic headlight beam throw adjustment for the LED headlight includes the following functions:

• Dynamic headlight beam throw adjustment

  The dynamic headlight beam throw adjustment was developed for compensating pitching movements that occur as a result of braking and acceleration.

• Adaptive headlight beam throw adjustment

The adaptive headlight beam throw adjustment uses vehicle information to identify driving over rises or dips. The headlights are turned appropriately. The automatic headlight beam throw adjustment thus ensures that oncoming traffic is not dazzled.

The adaptive headlight beam throw adjustment is employed when driving through dips and over crests. In accordance with the request from the Body Domain Controller (BDC), the Frontal Light Electronics Left (FLEL) or Frontal Light Electronics Right (FLER) controls the swivel module via the servomotor and by doing so the headlight beam throw of the headlight.

When the vehicle passes through a dip, the headlight beam throw is increased. The swivel module is moved up slightly. The roadway is illuminated a greater distance ahead.

When the vehicle passes over a crest, the headlight beam throw is reduced somewhat. The swivel module is moved down slightly. This reduces dazzling effect of an oncoming vehicle.

The automatic headlight beam throw adjustment is supported by 2 ride height sensors. one ride height sensor each located on the front axle and the rear axle of the vehicle. The ride height sensors are directly evaluated by the Body Domain Controller (BDC).