2005 BUICK TERRAZA lock

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. SeeInstrument
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.
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Interior Lamps Control
The interior lamp control is
located to the right of the
exterior lamp controls
on the instrument panel to
the left of the steering
column.
R(Interior Lamp Override):Turn the outer knob to
this position to have your interior lamps remain off
while any door is open.
1(Door):Turn the outer knob to this position to turn
the interior lamps on while any door is open and
when the ignition key is removed from the ignition.
+(Interior Lamps):Turn the outer knob to
this position to turn the interior lamps on.
Turn the inner knob to adjust the instrument panel
brightness, described earlier in this section.
Dome Lamp
The dome lamp is located in the headliner and has
two buttons to manually turn it on or off. The dome lamp
will come on each time you open a door, unless you
turn on the interior lamps override feature. SeeInterior
Lamps Control on page 3-17.
Entry Lighting
With entry lighting, the interior of your vehicle is
illuminated so that you can see inside before you enter
your vehicle. The lamps will come on for 20 seconds
if you unlock your door using your key or the remote
keyless entry transmitter and the ignition is in LOCK.
After 20 seconds have passed, the interior lamps
will slowly fade out. The lamps will turn off before the
20 seconds if you do one of the following:
Lock all the doors using the key.
Press lock on the power door lock switch.
Press lock on the remote keyless entry transmitter.
When any door is opened, entry lighting is cancelled.
The interior lamps will stay on while any door or
the liftgate is open, and slowly fade out when all
doors and the liftgate are closed.
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The interior lamps may stay on for up to 25 seconds
after all doors have been closed if they have not been
locked. SeeDelayed Lighting on page 3-18.
To turn the entry lighting feature off or on, seeDIC
Vehicle Personalization (Uplevel Only) on page 3-68.
Delayed Lighting
The delayed lighting feature will continue to illuminate
the interior for 20 seconds after all doors have been
closed, so that you can nd your ignition and buckle your
safety belt at night. Delayed lighting will not occur
while the ignition is in RUN or ACCESSORY. After
20 seconds have passed, the interior lamps will slowly
fade out. The lamps will fade out before the 20 seconds
have passed if you do one of the following:
Turn the ignition to RUN or ACCESSORY.
Lock all doors using the remote keyless entry
transmitter.
Lock all doors using the power door lock switch
or the key.
To turn the delayed lighting feature off or on, seeDIC
Vehicle Personalization (Uplevel Only) on page 3-68.
Exit Lighting
With exit lighting, the interior lamps will come on for
about 25 seconds whenever you remove the key from
the ignition. If you turn the ignition key to RUN or
ACCESSORY, the lamps will fade out. The lamps will
also fade out if you lock the doors with the power
door lock switch or the remote keyless entry transmitter.
When any door is opened, exit lighting is cancelled.
The interior lamps will stay on while any door or
the liftgate is open, and slowly fade out when all doors
and the liftgate are closed.
The interior lamps may stay on for up to 20 seconds
after all doors have been closed if they have not been
locked. SeeDelayed Lighting on page 3-18.
To turn the exit lighting feature off or on, seeDIC
Vehicle Personalization (Uplevel Only) on page 3-68.
3-18

Front Reading Lamps
There are two reading lamps and one courtesy lamp in
the overhead console. To turn either reading lamp
on or off, press the lens of the lamp. The courtesy lamp
will come on each time you open a door, unless you
turn on the interior lamps override feature. SeeInterior
Lamps Control on page 3-17.
Rear Reading Lamps
There are two reading lamps in the third row headliner.
To turn either reading lamp on or off, press the lens
of the lamp.
There may also be a reading lamp in the second row,
integrated with the dome lamp. To turn the second
row reading lamp on or off, press the button next to
the lamp lens.
Cargo Lamp
The cargo lamp is located in the rear of your vehicle,
above the liftgate opening, and does not have a switch.
The cargo lamp will come on each time you open a
door, unless you turn on the interior lamps override.
SeeInterior Lamps Control on page 3-17.
Battery Run-Down Protection
Your vehicle has a feature to help prevent you from
draining the battery, in case you accidentally leave the
interior lamps on. If you leave any interior lamps on
while the ignition is in lock or off, they will automatically
turn off after 10 minutes. The lamps will not come
back on again until you do one of the following:
Turn the ignition to RUN or ACCESSORY
Open a closed door, or close and reopen a door.
Turn the interior lamps on if they are in the door
or override position.
Turn the interior lamps to the door or override
position and then to on again if the interior
lamp control is in the on position.
If your vehicle has less than 15 miles (25 km) on the
odometer, the battery saver will turn off the lamps after
only three minutes.
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Climate Controls
Dual Climate Control System
Your vehicle may have a dual climate control system.
With this system you can control the heating, cooling
and ventilation for your vehicle.
Operation
Turn the right knob clockwise or counterclockwise to
direct the airow inside of your vehicle.
To change the current mode, select one of the following:
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs half of the air to the
instrument panel outlets, then directs the remaining
air to the oor outlets. Cooler air is directed to the upper
outlets and warmer air to the oor outlets.
6(Floor):This mode directs most of the air to the
oor outlets. Use this mode to send air to the rear of
the vehicle. Keep the area under the front seats free of
objects that could obstruct airow to the rear of the
vehicle.
The right knob can also be used to select defog or
defrost mode. For more information, see “Defogging
and Defrosting” later in this section.
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Outside Air:This mode will be automatically selected
when your vehicle is in any mode except maximum
air conditioning.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan
speed. Turn the knob to 0 to turn off the fan. The fan
must be turned on for the air conditioning compressor
to operate.
Temperature Control:Use the driver’s and
passenger’s levers to increase or decrease the air
temperature inside your vehicle.
#(Air Conditioning):Press this button to turn the
air conditioning system on or off. When it is pressed, an
indicator light in the button will come on to let you
know that air conditioning is activated.
You may notice a slight change in engine performance
when the air conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.
The air conditioning system removes moisture from the
air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.
#MAX (Maximum Air Conditioning):Turn the
right knob to this position for maximum air conditioning.
This will select air conditioning and recirculation for
maximum cooling of your vehicle.
Recirculation:This mode keeps outside air from
coming in the vehicle. It can be used to prevent outside
air and odors from entering your vehicle or help heat
or cool the air inside your vehicle more quickly.
This mode will automatically be selected when you
select maximum air conditioning.
3-26

Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear Window Defogger):Press this button to
turn the rear window defogger on or off. An indicator
light in the button will come on to let you know that the
rear window defogger is activated.
The rear window defogger will turn off about 10 minutes
after the button is pressed. If turned on again, the
defogger will only run for about ve minutes before
turning off. The defogger can also be turned off
by pressing the button again or by turning off
the engine.
Notice:Do not use anything sharp on the inside
of the rear window. If you do, you could cut or
damage the warming grid, and the repairs would
not be covered by your warranty. Do not attach
a temporary vehicle license, tape, a decal or
anything similar to the defogger grid.
Outlet Adjustment
k(Open):Turn the thumbwheel to this position to
open the air outlets.
l(Closed):Turn the thumbwheel to this position to
close the air outlets.
Use the louvers located on the air outlets to change the
direction of the airow.
Operation Tips

Clear away any ice, snow, or leaves from the air
inlets at the base of the vehicle that may block
the ow of air into your vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
3-28

If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push. Or, the pedal may go closer to the
oor. It may take longer to stop. If the light is still on,
have the vehicle towed for service. SeeAnti-Lock Brake
System Warning Light on page 3-38andTowing Your
Vehicle on page 4-37.
{CAUTION:
Your brake system may not be working
properly if the brake system warning light is
on. Driving with the brake system warning
light on can lead to an accident. If the light
is still on after you have pulled off the road
and stopped carefully, have the vehicle towed
for service.
Anti-Lock Brake System Warning
Light
Your vehicle may have
this light. If it does, the
anti-lock brake system
warning light should come
on for a few seconds
when you turn the ignition
key to RUN.
If the anti-lock brake system warning light stays on
longer than normal after you’ve started your engine, turn
the ignition off. Or, if the light comes on and stays on
when you’re driving, stop as soon as possible and turn
the ignition off. Then start the engine again to reset
the system. If the light still stays on, or comes on again
while you’re driving, the anti-lock brake system needs
service and you don’t have anti-lock brakes.
The anti-lock brake system warning light should come
on briey when you turn the ignition key to RUN. If
the light doesn’t come on then, have it xed so it will be
ready to warn you if there is a problem.
3-38