sensor BUICK REGAL 2004 Owner's Manual

Daytime Running Lamps / Automatic
Headlamp System
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. Daytime running
lamps are required to function at all times on all
vehicles rst sold in Canada.
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 the front turn signal lamps
come on when the following conditions are met:
The ignition is on.
The exterior lamps control is off.
The parking brake is released.
While the DRL are on, only the vehicle’s front turn
signal lamps will also be on. The headlamps, taillamps,
sidemarker and other lamps will not be on. The
instrument panel will not be lit up either.
When it is dark enough outside, the front turn signal
lamps will turn off and the vehicle’s headlamps
and parking lamps will turn on. The other lamps that
come on with the headlamps will also come on.When it is bright enough outside, the headlamps will go
off and the front turn signal lamps will come on.
To idle the vehicle with the DRL and automatic
headlamp control off, set the parking brake while the
ignition is in OFF or LOCK. Then start the vehicle. The
DRL, headlamps and parking lamps will stay off until
the parking brake is released.
To turn off the automatic headlamp feature when it is
dark outside, move the exterior lamp control to the
parking lamp position. The parking lamps will remain
illuminated and the headlamps will turn off. The
fog lamps will also go on if they were on previously.
As with any vehicle, the regular headlamp system
should be turned on when needed.
Delayed Headlamps
Delayed headlamps illumination provides a period of
exterior lighting as you leave your vehicle. The feature is
activated when the vehicle’s headlamps are on due to
the automatic headlamp control feature described
previously in this section, and when the vehicle’s ignition
is turned off. The headlamps will then remain on until
the exterior lamps control is moved from OFF to
the parking lamp position or until a 90 second lighting
period has ended.
If the ignitionis turned off with the exterior lamps control
in the parking lamp or headlamps position, the
delayed headlamps illumination cycle will not occur.
3-12

2. Press the AUTO button.
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool any
faster.
If the system is set at the warmest temperature
setting, 90°F (32°C), hot air will be directed to the
oor, the fan will increase to the highest speed, and
the system will remain in manual mode at that
temperature. The system will not return to automatic
until the temperature setting is lowered.
If the system is set at the coldest temperature
setting, 60°F (15°C), cold interior air will be
recirculated through the air panel outlets, and the
fan will increase to the highest speed. The
system will not return to automatic until the
temperature is raised.
In cold weather, the system will start at reduced fan
speeds to avoid blowing cold air into the vehicle
until warmer air is available. The system will
start out blowing air at the oor but may change
modes automatically as the vehicle warms up
to maintain the chosen temperature setting. The
length of time needed for warm up will depend on
the outside temperature and the length of time
that has elapsed since the vehicle was last driven.3. Wait for the system to regulate. This may take from
10 to 30 minutes. Then, adjust the temperature, if
necessary.
Do not cover the solar sensor located in the center
of the instrument panel, near the windshield. For
more information on the solar sensor, see
“Solar Sensor” later in this section.
Manual Operation
During daylight hours, the instrument panel brightness
control might need to be adjusted to the highest setting,
in order to see the indicator lights for the various
climate control settings.
OFF:Pressing the OFF button cancels automatic
operation and places the system in manual mode. Press
the AUTO button to return to automatic operation.
TEMP (Temperature):To manually adjust the
temperature inside the vehicle, press the up arrow on
the TEMP control to raise the temperature and press the
down arrow to lower the temperature. The display will
show the selection for a few seconds, and then the
outside temperature will be displayed.
When the DUAL light indicator is on, this means the
TEMP control has set the temperature for the driver.
When the DUAL light indicator light is not on, this means
the TEMP control has set the temperature for the
entire cabin.
3-21

For quick cool down on hot days, press the AUTO
button. The system will automatically enter the
recirculation mode where the temperature will be at the
full cold position for maximum cooling.
The air-conditioning system removes moisture from the
air, so a small amount of water dripping underneath
the vehicle while it is idling or after the engine is turned
off is normal.
Operating the climate control system in the RECIRC
mode may cause fogging of the vehicle’s windows when
the weather is cold and damp. To clear the fog, select
either WINDSHIELD/FLOOR or defrost mode and
increase the speed.
Sensors
The solar sensor on the vehicle monitors the solar heat
and the air inside of the vehicle. This information is
used to maintain the selected temperature by regulating
adjustments to the temperature, the fan speed, and
the air delivery system. The system may also supply
cooler air to the side of the vehicle facing the sun. The
recirculation mode will also be activated, as necessary.
Do not cover the solar sensor located in the center
of the instrument panel, near the windshield, or
the system will not work properly.
Passenger Control
The arrow buttons to control the temperature on the
passenger side of the vehicle are located to the right of
the PASSENGER CONTROL window. Press the
DUAL button so that the indicator light is on. Press the
right arrow to raise the temperature and press the
left arrow to lower the temperature on the passenger
side of the vehicle.
If the indicator light below the arrows is amber this
indicates that the passenger side temperature is
set the same as the driver’s side.
If the indicator light below the arrows is red, this
indicates that the passenger side temperature is
set warmer than that of the driver’s side.
If the indicator light below the arrows is blue this
indicates that the passenger side temperature is
set cooler than that of the driver’s side.
Defogging and Defrosting
Fog on the outside of the windows is a result of high
humidity causing moisture to form and condense on the
cool window glass. This can be minimized if the climate
control system is used properly. There are two modes to
clear fog or frost from the windshield and side windows.
3-23

Low Oil Level Light
With the oil level
monitoring system the
LOW OIL light will come
on briey when the ignition
is turned on.
If the light does not come on briey, have the low oil
level sensor system checked so it will be ready to warn
you if there is a problem.
If the light stays on, stop the vehicle on a level surface
and turn the engine off. Check the oil level using the
engine oil dipstick. SeeEngine Oil on page 5-16.
The oil level monitoring system only checks the oil level
during the brief period when the key is turned to on
and the engine cranks. It does not monitor the engine
oil level when the engine is running. An oil level check is
only performed if the engine has been turned off for a
considerable period of time, allowing the circulating oil to
drain back into the oil pan.
Change Engine Oil Light
The CHANGE OIL SOON
light should come on
briey as a bulb check
when the engine is started.
If the light does not
come on, have it serviced.
If the CHANGE OIL SOON light comes on and stays on
after the engine is started, have the oil changed.
For additional information, see “When to Change Engine
Oil (GM Oil Life System)” and “How to Reset the
Change OIL SOON Light” underEngine Oil on
page 5-16.
3-39

Relays Usage
9 Cooling Fan 2
10 Cooling Fan 3
11 Starter Solenoid
12 Cooling Fan 1
13 Ignition Main
14 Air Pump (Optional)
15 Not Used
16 Horn
17 Fog Lamps
18 Not Used
19 Fuel Pump
Fuses Usage
20 Not Used
21 Generator
22 Engine Control Module
23 Air Conditioner Compressor Clutch
24 Cooling Fan
25 Electronic Ignition
Fuses Usage
26 Transaxle
27 Horn
28 Fuel Injector
29 Oxygen Sensor
30 Engine Emissions
31 Fog Lamps
32 Right Headlamp
33 Rear Compartment Release
34 Parking Lamps
35 Fuel Pump
36 Left Headlamp
37 Not Used
38 Not Used
39 Not Used
40 Not Used
41 Not Used
42 Not Used
43 Not Used
SYMBOLAir Conditioner Compressor Clutch
Diode
5-102

Securing a Child Restraint
Center Rear Seat Position............................1-42
Designed for the LATCH System...................1-40
Rear Outside Seat Position...........................1-40
Right Front Seat Position..............................1-44
Security Feedback............................................ 2-5
Security Light.................................................3-40
Sensors.........................................................3-23
Service........................................................... 5-3
Adding Equipment to the Outside of
Your Vehicle.............................................. 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-35
Publications Ordering Information...................7-11
Vehicle Soon Light.......................................3-41
Service Bulletins.............................................7-12
Service Engine Soon Light...............................3-35
Service Manuals.............................................7-11
Setting Preset Stations............................3-46, 3-53
Setting the Time.............................................3-45
Setting the Tone (Bass/Treble)..................3-47, 3-54
Sheet Metal Damage.......................................5-95
Shift Lock Release..........................................2-27
Shifting Into Park (P).......................................2-25
Shifting Out of Park (P)...................................2-27
Shoulder Belt Height Adjuster...........................1-14
Skidding........................................................4-16
Some Other Rainy Weather Tips.......................4-20Special Fabric Cleaning Problems.....................5-91
Specications, Capacities...............................5-103
Speedometer..................................................3-28
Split Folding Rear Seat..................................... 1-6
Starting Your Engine.......................................2-19
Steering........................................................4-12
Steering in Emergencies..................................4-13
Steering Tips..................................................4-12
Steering Wheel Controls, Audio.........................3-62
Storage Areas
Center Console Storage Area........................2-35
Convenience Net.........................................2-36
Glove Box..................................................2-35
Storing the Flat Tire and Tools..........................5-87
Storing the Spare Tire and Tools.......................5-88
Stuck in Sand, Mud, Ice or Snow......................4-30
Sun Visors.....................................................2-15
Sunroof.........................................................2-36
T
Tachometer....................................................3-29
Taillamps
Turn Signal, and Stoplamps..........................5-58
TCS Warning Light..........................................3-33
Theft-Deterrent, Radio.....................................3-61
Theft-Deterrent Systems...................................2-16
PASS-Key
®II ..............................................2-16
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