2007 BUICK RANDEZVOUS air conditioning

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.
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.
@(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. Press this button to turn the
recirculation mode on or off. When the button
is pressed, an indicator light will come on.
The air-conditioning compressor also comes on.
The recirculation mode can be used with vent and
bi-level modes, but it cannot be used with oor,
defog, defrost or outside air modes.
Temperature Control:Turn the center knob
clockwise or counterclockwise to increase
or decrease the air temperature inside your
vehicle.
uA/C (Air Conditioning):Press this button to
turn the air-conditioning system on or off.
When A/C 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.
201

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.
Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity, or moisture, condensing on the cool
window glass. This can be minimized if the climate
controls system is used properly. There are two
modes to clear fog or frost from your windshield.
Use the defog mode to clear the windows of fog or
moisture and warm the passengers. Use the
defrost mode to remove fog or frost from
the windshield more quickly.Turn the right knob to select the defog or
defrost mode.
-(Defog):This mode directs air to the
windshield and the oor outlets. When you select
this mode, the system turns off recirculation
and runs the air-conditioning compressor unless
the outside temperature is at or below freezing.
The recirculation mode cannot be selected while in
the defog mode.
0(Defrost):This mode directs most of the air to
the windshield and the side window outlets, with
some air directed to the oor outlets. In this mode,
the system will automatically turn off recirculation
and run the air-conditioning compressor, unless
the outside temperature is at or below freezing.
Recirculation cannot be selected while in the
defrost mode.
Do not drive the vehicle until all the windows are
clear.
202

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.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan
speed. Turn the knob counterclockwise until it
stops to turn off the fan. The fan must be turned
on for the air conditioning compressor to operate.
@(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. Press this button to turn the
recirculation mode on or off. When the button
is pressed, an indicator light will come on.
The air-conditioning compressor also comes on.
The recirculation mode can be used with vent and
bi-level modes, but it cannot be used with oor,
defog, defrost or outside air modes.
Temperature Control:Use the driver’s and
passenger’s temperature levers to increase or
decrease the air temperature inside your vehicle.
uA/C (Air Conditioning):Press this button
to turn the air-conditioning system on or off. When
A/C 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.
204

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.
Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity, or moisture, condensing on the cool
window glass. This can be minimized if the climate
controls system is used properly. There are
two modes to clear fog or frost from your
windshield. Use the defog mode to clear the
windows of fog or moisture and warm the
passengers. Use the defrost mode to remove fog
or frost from the windshield more quickly.Turn the right knob to select the defog or
defrost mode.
-(Defog):This mode directs air to the
windshield and the oor outlets. When you select
this mode, the system turns off recirculation
and runs the air-conditioning compressor unless
the outside temperature is at or below freezing.
The recirculation mode cannot be selected while in
the defog mode.
0(Defrost):This mode directs most of the air to
the windshield and the side window outlets, with
some air directed to the oor outlets. In this mode,
the system will automatically turn off recirculation
and run the air-conditioning compressor, unless
the outside temperature is at or below freezing.
Recirculation cannot be selected while in the
defrost mode.
Do not drive the vehicle until all the windows are
clear.
205

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 approximately
half of the air to the instrument panel outlets, then
directs the remaining air to the oor outlets and
the defroster and side window 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 MODE button can also be used to select
defog. For more information, see “Defogging and
Defrosting” later in this section.
9(Fan):Press this button to increase to
decrease the fan speed; keep pressing the up or
down arrow until the desired fan speed appears
on the display.VENT:Press this button to turn the outside air
mode on or off. When this mode is on, outside air
will be circulated throughout your vehicle. VENT
can be used with all modes, but it cannot be used
with the recirculation mode.
@(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. Press this button to turn the
recirculation mode on or off. When the button
is pressed, an indicator light will come on.
The air-conditioning compressor also comes on.
The recirculation mode can be used with vent and
bi-level modes, but it cannot be used with oor,
defog, defrost or outside air modes.
Temperature Control:Use the DRIVER knob to
increase or decrease the air temperature inside
your vehicle. If the front passenger would like the
temperature to be warmer or cooler, use the
PASS knob to adjust the passenger’s temperature.
Air Conditioning:The air-conditioning
compressor will automatically come on when a
temperature cooler than the interior temperature is
chosen using the temperature knobs.
208

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.
Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity, or moisture, condensing on the cool
window glass. This can be minimized if the climate
controls system is used properly. There are two
modes to clear fog or frost from your windshield.
Use the defog mode to clear the windows of fog or
moisture and warm the passengers. Use the
defrost mode to remove fog or frost from
the windshield more quickly.Use the MODE button to select the defog mode.
-(Defog):This mode directs air to the
windshield and the oor outlets. When you select
this mode, the system turns off recirculation
and runs the air-conditioning compressor unless
the outside temperature is at or below freezing.
The recirculation mode cannot be selected while in
the defog mode.
Press the defrost button to select defrost.
0(Defrost):This mode directs most of the air to
the windshield and the side window outlets, with
some air directed to the oor outlets. In this mode,
the system will automatically turns off recirculation
and run the air-conditioning compressor, unless
the outside temperature is at or below freezing.
Recirculation cannot be selected while in the
defrost mode.
Do not drive the vehicle until all the windows are
clear.
209

(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60, as
shown in item C of the illustration, it would mean
that the tire’s sidewall is 60 percent as high as it
is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire. The
letter R means radial ply construction; the letter D
means diagonal or bias ply construction; and the
letter B means belted-bias ply construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certied to carry a
load. Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission/
transaxle, power steering, power brakes, power
windows, power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
410

Underhood Fuse Block
This fuse block is located in the engine
compartment, on the passenger’s side of the
vehicle. SeeEngine Compartment Overview on
page 364for more information on location.
The back-up lamp relay (A) is located behind and
to the left of the underhood fuse block.
To remove the cover, press the two tabs in and lift
up the cover.
Fuse Usage
1 Fuel Pump
2 Air Conditioning Compressor Clutch
3 Horn
4 Anti-lock Brake System (ABS)
5 Engine Control Module (ECM)
466