Adjusting the distortion
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Step 1: Correct the distortion. To do so, turn the lines until they are parallel to the circles on the target.
Correct the shift on the x-axis and y-axis.
Step 2: Shift the vertical lines on the x-axis. Shift the lines to the left or right until they pass through the four circles. In the example below, the lines must be shifted to the left.
Step 3: The horizontal line on the y-axis. Move the line upwards or downwards until the intersecting points are at the vertical lines in the upper circles. In the graphic below, the line must be shifted downwards.