Cadillac 2009 DTS, Owner'S Manual

Page: 348 / 462

To adjust the vertical aim:
1. Open the hood. See Hood Release on page 5-11
for more information.
2. Find the center line running through the lens of the
headlamp.
3. Record the distance from the ground to the center
line running through the lens of the headlamp.
4. At a wall, measure from the ground upward (A) to
the recorded distance from Step 3 and mark it.
5. Draw or tape a horizontal line (B) the width of the
vehicle at the wall where it was marked in Step 4.
Notice: Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
6. Turn on the low-beam headlamps and place a piece
of cardboard or equivalent in front of the headlamp
not being aimed. This should allow only the beam of
light from the headlamp being aimed to be seen on
the flat surface.
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