Porsche 996 TT, Repair Manual

Page: 104 / 2099

01 Checking the function of the vehicle's lights and
the headlight setting
Checking the adjustment of the headlights
Adjusting the main headlights
Adjusting the main headlights, USA version
Fog light adjustment
Vehicle lights:
Switch on the ignition, and switch through all exterior and interior light functions in turn. Check the
function of the exterior lighting with the help of a second person.
•
Horn:
Switch on ignition, press actuation for horn on steering wheel and check the sound of the horn.
•
Clock
Check current time, set if necessary. In the instrument cluster, turn the right set−up button with the
Clock symbol to the left/right. This sets the hours. When this set−up button is pressed, the minute
display blinks. Now the minutes can be set by turning to the left/right. Compare the time in the
instrument cluster with time in PCM (if present) and if necessary, set the time in the PCM as well. •
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Checking the adjustment of the headlights
Note
Set the headlight adjustment unit to 10 cm/10 m (1%)!
•
With this alignment, preference must be given to the central zone around the salient point of the
light/dark limit! •
First, make the vertical adjustment of the dipped beam headlights.
1. To do this, line up the light/dark borderline running upwards at an angle on the right−hand side with the
dotted 15° line of the adjustment unit.
Next, perform the horizontal adjustment of the dipped beam headlights.
01 Checking the function of the vehicle's lights and the headlight setting 41