Headlamp Aiming - Cadillac 2005 DeVille Owner's Manual

Headlamp Aiming

Your vehicle has a visual optical headlamp aiming system
which may be equipped with horizontal aim indicators.
The aim has been preset at the factory and should need
no further adjustment. This is true even though your
horizontal aim indicators (if equipped) may not fall exactly
on the "0" (zero) marks on their scales.
If your vehicle is damaged in an accident, the headlamp
aim may be affected. Aim adjustment to the low beam
may be necessary if it is difficult to see lane markers (for
horizontal aim), or if oncoming drivers flash their high
beams at you (for vertical aim). If you believe your
headlamps need to be re-aimed, we recommend that you
take your vehicle to your dealer for service. However, it is
possible for you to re-aim your headlamps as described
in the following procedure.
5-48
Adjustment screws can be turned with an E8 Torx
®
socket or T15 Torx screwdriver.
Notice: To make sure your headlamps are aimed
properly, read all the instructions before beginning.
Failure to follow these instructions could cause
damage to headlamp parts.
The vehicle should be properly prepared as follows:
•
The vehicle should be placed so the headlamps are
25 ft. (7.6 m) from a light colored wall or other flat
surface.
•
The vehicle must have all four tires on a perfectly
level surface which is level all the way to the wall
or other flat surface.
•
The vehicle should be placed so it is perpendicular
to the wall or other flat surface.
•
The vehicle should not have any snow, ice or mud
attached to it.
•
The vehicle should be fully assembled and all other
work stopped while headlamp aiming is being done.
•
The vehicle should be normally loaded with a
full tank of fuel and one person or 160 lbs (75 kg) on
the driver's seat.
•
Tires should be properly inflated.
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