Posted 12 May 2009 - 11:26 AM
Posted 12 May 2009 - 06:38 PM
Posted 12 May 2009 - 08:26 PM
Posted 12 May 2009 - 09:04 PM
Ecah headlight has 2 adjusting screws. They are accessible from the back of the headlights on 3 series models. One controls up-and-down movement and one left and right movement.
The simplest method according to the manual is to a blank wall or garage door 25 feet = 7.62 m in front of the car and at floor level. Position masking tape vertically on the wall to mark the vehicle centre line and the centre line of both headlights. They advise that you position the tape on the wall with the vehicle parked only a few inches or metres away, and then move the vehicle back the required distance. Make a horizontal line on the wall to mark the centreline of all headlights.
Move the vehicle back 25 feet (7.62m) away from the wall. Adjustment should be made with vehicle level, and fuel tank half-full for obvious reasons.
Switch on the dipped beam. The bright spots on the wall should be two inches (5.1cm) yes, 5.1 centimetres below the hrizontal line. as well as 5.1cm to the left of of the headlight vertical lines.
Adjustment is made by turning the adjustment screw to raise or lower the beam. The other adjusting screw should be used in the same manner to move the beam left or right.
With the main beam on, the bright spots on the wall should be exactly on the vertical line.
Note: It may not be possible to position the headlight aim exactly for both main and dipped beams. If a compromise must be made, keep in mind that the dipped beam is most used, and will have the greatest effect on driver safety.
Source: Haynes Service and Repair Manual;Chapter 12
Good luck. I'll give it a try as well tomorrow and will report on it.