Oldsmobile 2003 Silhouette Owner's Manual page 172

Daytime Running Lamps/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 isn't covered. The DRL
system will make your front parking and turn signal
lamps come on in daylight when:
The ignition is on,
the exterior lamps control is off, and
the parking brake is released.
When the DRL are on, only your front parking and turn
signal lamps will be on. Your instrument panel won't
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When it's dark enough outside, the exterior lamps will
come on automatically. When it's bright enough outside,
the exterior lamps will turn off and the DRL will turn
on. Of course, you may still turn on the headlamps any
time you need to.
If you start your vehicle in a dark garage, the automatic
headlamp system will come on immediately. Once
you leave the garage, it will take approximately
one minute for the automatic headlamp system to
change to DRL if it is light outside. During that delay,
your instrument panel cluster may not be as bright
as usual. Make sure your instrument panel brightness
control is in the full bright position. See "Instrument
Panel Brightness Control'' under lnterior Lamps
on page 3-17.
To idle your vehicle with the DRL and automatic
headlamp control off, set the parking brake while the
ignition is in OFF or LOCK. Then start the vehicle.
The DRL and automatic headlamp control will stay off
until you release the parking brake.
As with any vehicle. you should turn on the reuular
headlamp system when you need it.
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