Saturn 2009 ASTRA - Manual (Page 210)

Headlamp Aiming
The optical headlamp aiming system
has been preset at the factory and
should need no further adjustment.
However, If the vehicle is damaged
in a crash, the headlamp aim may be
affected and adjustment may be
necessary.
If oncoming vehicles flash their high
beams at you, this may also mean
the vertical aim needs to be adjusted.
It is recommended that the vehicle
is taken to your dealer/retailer for
service if the headlamps need to be
re-aimed. It is possible however,
to re-aim the headlamps as
described.
The vehicle should:
• Be placed so the headlamps
are 25 ft. (7.6 m) from a light
colored wall.
• Have all four tires on a perfectly
level surface which is level all
the way to the wall.
• Be placed so it is perpendicular
to the wall.
• Not have any snow, ice, or
mud on it.
• Be fully assembled and all other
work stopped while headlamp
aiming is being done.
• Have a full tank of fuel and
one person or 160 lbs (75 kg)
on the driver seat.
• Have all tires properly inflated.
Headlamp aiming is done with
the vehicle’s low-beam headlamps.
The high-beam headlamps will
be correctly aimed if the low-beam
headlamps are aimed properly.
To adjust the vertical aim on the
headlamps:
1. Open the hood. See Hood
Release on page 9-5 for
more information.
2. Locate the aim dot on the lens of
the low-beam headlamp.
3. Record the distance from the
ground to the aim dot on the
low-beam headlamp.
9-26 Vehicle Service and Care