Automatic Headlamp; System - Cadillac XT4 2023 Owner's Manual

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The exterior lamp control is
in AUTO.
The light sensor determines
it is daytime.
The parking brake is
released or the vehicle is not
in P (Park).
When the DRL are on, the
taillamps, sidemarker lamps,
and other lamps will not be on.
The DRL turn off when the
headlamps are turned to
the ignition is off. For vehicles
first sold in Canada, the DRL
can only be turned off when
the vehicle is parked.

Automatic Headlamp

System

When the exterior lamp
control is set to AUTO and it is
dark enough outside, the
headlamps come on
automatically.
or
There is a light sensor on top
of the instrument panel. Do
not cover the sensor.
The system may also turn on
the headlamps when driving
through a parking garage or
tunnel.
If the vehicle is started in a
dark garage, the automatic
headlamp system comes on
immediately. If it is light
outside when the vehicle
leaves the garage, there is a
slight delay before the
automatic headlamp system
changes to the Daytime
Running Lamps (DRL). During
Lighting
that delay, the instrument
cluster may not be as bright as
usual. Make sure the
instrument panel brightness
control is in the full bright
position. See Instrument Panel
Illumination Control 0 153.
When it is bright enough
outside, the headlamps will
turn off or may change
to DRL.
The automatic headlamp
system turns off when the
exterior lamp control is turned
to
or the ignition is off.
For vehicles sold in Canada,
this control only works when
the transmission is in P (Park).
Lights On with Wipers
If the windshield wipers are
activated in daylight with the
engine on, and the exterior
lamp control is in AUTO, the
headlamps, parking lamps, and
other exterior lamps come on.
The transition time for the
lamps coming on varies based
on wiper speed. When the
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