Porsche 911 Carrera - Manual (Page 157)

Automatic Headlight Beam Adjustment
Function
Vehicles with Bi-Xenon headlights feature
automatic headlight beam adjustment.
When the ignition is switched on, the level of
the headlight beam automatically changes in
accordance with the vehicle load. The level of
the headlight beam is automatically kept constant
during acceleration and braking.
Checking operation
1. Switch the low beam on.
2. Insert ignition key and switch ignition on. The
light beam first dips all the way down and is
then adapted to the vehicle load.
If this test item is not met, the headlight beam
adjustment system must be checked by an
authorized Porsche dealer.
Controls, Instruments
155