Buick 2005 Terraza - Manual (Page 146)

A light sensor on top of the instrument panel makes
the DRL work, so be sure it is not covered. The
DRL system will make front parking and turn signal
lamps come on in daylight when the following conditions
are met:
• The ignition is on.
• The exterior lamps control is off.
When the DRL are on, only your front turn signal lamps
will be on. Your instrument panel will not be lit up.
When it is dark enough outside, the exterior lamps
will come on automatically. When it is 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
30 seconds 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 on page 3-16.
To idle your vehicle with the DRL and automatic
headlamps off, toggle the exterior lamp control to off
after starting the vehicle.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Instrument Panel Brightness
The knob to adjust
the instrument panel
brightness is located in
the center of the interior
lamp controls.
Turn the knob clockwise to brighten the lights and
counterclockwise to dim them.
3-16