Adjusting the Main Headlights
Adjusting The Main Headlights
Flexible screwdriver 9703, refer to 'Tools'
- The vehicle must be on a horizontal surface.
- Make the adjustment with the regulator switch set to 0 (headlight beam adjustment).
- Make the adjustment with the vehicle ready for driving (fuel tank full, driver's seat occupied by a person or 75 kg, the tire pressure must correspond to the stipulated values) using a headlight adjustment unit.
Bi-Xenon main headlight
NOTE:
- Read out the HBA fault memory and delete it before each adjustment of the headlights. To do this in the Porsche System Tester, select the menu Special functions, then select the HBA left menu or the HBA right menu, read out the fault memory, and delete it.
- If a new Bi-Xenon main headlight has been installed, the control unit must also be calibrated for level regulation before any adjustments are made.
The headlight beam adjustment (HBA) control unit is adapted to suit current conditions relating to position in the vehicle under the menu item "Calibration". The existing vehicle position is stored as zero position during calibration.
Following calibration, the headlight setting must be checked and corrected if necessary.
Calibration must be performed if changes were made that can change the position of the angle sensors:
- Headlights, complete
- HBA (Bi-Xenon) control unit
- HBA angle sensor (front and rear compression)
- Running gear components
- Damage caused by accidents
- When the coding is changed in the menu item Change coding, the ignition must always be switched off afterwards and the key removed.
- After the ignition is switched on again, the new coding of the control unit is updated and the stored faults can be erased.
- If the coding does not match the vehicle equipment, faults will be displayed that are not really present.
1. Press down the cover "1" in the engine compartment and remove it.
2. Turn on the ignition, turn on dipped beam and high beam headlights.
3. Check setting, adjust if necessary.
Adjusting:
- 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.
NOTE:
- The distance between the headlights and the adjustment unit should be as small as possible.
- It should not exceed 30 cm, because if the distance is greater, it is no longer possible to define the formation of the light/dark limit in the adjustment unit clearly.
- The description refers to the left headlight.
The vertical/side adjustment of the dipped beam/high beam highlight is made first: adjustment "A" and "B".
4. 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.
5. The dipped beam headlight is then adjusted horizontally: adjustment "A" and "B".
NOTE:
- Guide the flexible screwdriver nearly horizontally through the opening in the fender.
To do this, line up the left, horizontal section of the light/dark limit (when driving on the right) with the dotted horizontal line of the adjustment unit.
- The figure refers to the halogen headlight.
6. Check auxiliary high beam headlight and, if necessary, adjust the side setting using "A" and "B".
7. In the case of Bi-Xenon headlights, the ignition must be switched off and on after the adjustment has been made with the lights switched on.
8. After this, the adjustment must be checked again.
9. Fit cap again.
Adjusting The Main Headlights, USA Version
NOTE: A new adjustment may only be made in the case of accident repairs or replacement of the main headlights.
- Vertical and horizontal adjustment must be carried out with a headlight adjustment unit.