Cadillac cts User Manual

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.

The DRL system will make the turn signal lamps come
on when the following conditions are met:
D It is still daylight and the ignition is in ON 

or START,

D the exterior lamp control is in OFF or AUTO with

the headlamps off, and

D an automatic transmission is not in PARK (P) or the

parking brake is not set on a manual transmission.

When DRL are on, only your turn signal lamps will be on.
No other exterior lamps will be on when the DRL are
being used. Your instrument panel won’t be lit up either.

When the exterior lamp control is in AUTO and it’s dark
enough outside, the DRL will turn off and the low

-

beam

headlamps will turn on. When it’s bright enough
outside, the low

-

beam headlamps will go off, and the

DRL will turn back on.

If it’s dark enough outside and the exterior lamp control
is in OFF, a Headlamps Suggested message will appear
on the Driver’s Information Center (DIC) display. This
message informs the driver that turning on the exterior
lamps is recommended even though the DRL are still
illuminated. Turning the exterior lamp control to AUTO
or to the low

-

beam headlamp position will turn off the

DRL and cancel the Headlamps Suggested message. 
If the parking lamps or the fog lamps were turned on
instead, the DRL will still turn off and the Headlamps
Suggested message will be displayed. You can turn it off
by pressing the OK button if you have the Navigation
audio system or the CLR button if you have the base
audio system.

To operate your vehicle with the DRL off, turn the
exterior lamp control to OFF. Then turn on the fog
lamps or parking lamps, and the DRL will turn off. 
The Headlamps Suggested message will appear on the
DIC display. This will work regardless of gear position
and whether or not the parking brake is set.

As with any vehicle, you should turn on the regular
headlamp system when you need it.