Adjusting Headlights - Porsche 911 CARRERA - 2003 Manual

Adjusting Headlights
See caution on "Replacing Bulbs..
Adjustment
The adjustment is made with the vehicle ready
to drive and the fuel tank completely filled.
The driver's seat must be loaded by a person or
a 165 Ibs. (75 kg) weight and the tire pressures
must meet the prescribed values.
After being loaded, the car must be rolled a few
meters so that the suspension can settle.
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Practical Tips, Emergency Service
For checking the headlight adjustment, the verti-
cal position of the cutoff of the lowbeam (see
fig.) has to be projected on a vertical screen
(wall) in distance of 7.5 m from the front lens of
the head lamp.
The correct position of the cutoff is 5 cm at
7.5 m (0.4°) below a horizontal line, x cm from
ground to the center of the head lamp lens.
Lateral adjustment of the headlights should be
carried out at a specialist workshop with an opti-
cal adjustment unit.
Distance
Visual aim shall be performed at not less than
7.5 m (this value is a rounded down conversion
from the 25-foot distance typical of field aim
using a screen). The 7.5 m distance is
measured from the headlamp lens to the viewing
screen.