Daytime Running Lamps (Drl) - Cadillac STS 2011 Owner's Manual

Daytime Running Lamps (DRL)

Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
Fully functional daytime running lamps are required on
all vehicles first sold in Canada.
The DRL system comes on when the following
conditions are met:
It is still daylight and the ignition is on.
The automatic lights are enabled.
The transmission is not in P (Park).
When DRL are on, only the front turn signal lamps will
be on. No other exterior lamps will be on when the DRL
are being used. The instrument panel will not be lit.
When the automatic lights are enabled and it is dark
enough outside, the DRL will turn off and the low-beam
headlamps will turn on. When it is bright enough
outside, the low-beam headlamps will go off, and the
DRL will turn back on. If the vehicle is started in a dark
garage, the automatic headlamp system comes on
immediately. Once the vehicle leaves the garage,
it will take about one minute for the automatic
headlamp system to change to DRL if it is light outside.
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During that delay, the instrument panel cluster may not
be as bright as usual. Make sure the instrument panel
brightness lever is in the full bright position. See
Instrument Panel Brightness on page 4 35.
To operate the vehicle with the DRL off, turn the exterior
lamp control off and then do one of the following:
Turn the exterior lamp control to the parking lamp
position.
Turn the exterior lamp control to the headlamp
position.
Turn the exterior lamp control from AUTO to off
and back to AUTO.
An AUTOMATIC LIGHTS OFF message will appear on
the DIC, showing that automatic lighting has been
disabled. See DIC Warnings and Messages on
page 4 76.
The regular headlamp system should be turned on
when needed.