GMC 2008 Acadia - Manual (Page 158)

Daytime Running Lamps (DRL)/
Automatic Headlamp System
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during the
day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in
the short periods after dawn and before sunset.
Fully functional daytime running lamps are required
on all vehicles first sold in Canada.
A light sensor on top of the instrument panel makes
the DRL work, so be sure it is not covered.
The DRL system’s automatic headlamp control will
make the low-beam headlamps come on at a reduced
brightness when the following conditions are met:
• The ignition is in the ON/RUN position.
• The exterior lamps control is in AUTO.
• The engine is running.
When the DRL are on, only the low-beam headlamps,
at a reduced level of brightness, will be on. The
headlamps, taillamps, sidemarker, and other lamps
will not be on. The instrument panel and cluster will
also not be lit.
When it is dark enough outside, the low-beam
headlamps will turn off and the headlamps and parking
lamps will turn on. The other lamps that come on
with the headlamps will also come on.
When it is bright enough outside, the headlamps will
go off and the DRL will come on.
As with any vehicle, you should turn on the regular
headlamp system when it is needed.
Fog Lamps
Use the fog lamps for better vision in foggy or misty
conditions.
- (Fog Lamps): The fog lamps button is located on
the exterior lamps control. The exterior lamps control
is located on the instrument panel to the left of the
steering column.
The ignition must be on for the fog lamps to work.
Press the exterior lamps button to turn the fog lamps
on or off. A light will come on in the instrument
panel cluster when the fog lamps are in use.
When the headlamps are changed to high-beam, the
fog lamps will turn off. The fog lamps come back
on again when the high-beam headlamps are turned off.
Some localities have laws that require the headlamps
to be on along with the fog lamps.
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