climate control CADILLAC STS 2005 1.G Owner's Manual

Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. There are two modes to clear fog 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.
yNz(Mode):Press this button until defog appears
on the display.
-(Defog):This mode directs the air between the
windshield and oor outlets with some air supplied to the
outboard panel outlets and side window defogging
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 is cancelled when you enter
defog mode. If you select recirculation while in defog
mode, it will be cancelled after 10 minutes.
If you have fogging on the side windows, remain in
defog or defrost mode until they clear.
0(Defrost):Pressing the defrost button directs most
of the air to the windshield, with some air directed to
the side windows and outboard panel 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.
This mode may also cause the fan speed and air
temperature to increase.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
The rear window defogger will only work when the
ignition is in ON or during remote start, if programmed.
See “Personal Settings Menu” underVehicle
Personalization on page 2-47for additional information.
=(Rear Window Defogger):Press this button to
turn the rear window defogger on or off. Be sure to clear
as much snow from the rear window as possible.
3-55

Rear Climate Control System
Your vehicle has a rear climate control system. The
base model includes air outlets in the rear of the center
console for cooling and under-seat air outlets for
heating. The temperature, quantity, and air delivery
location is controlled automatically by the front climate
control system.
Some vehicles are equipped with an optional climate
control panel for the rear passenger, located on the back
of the center console.
The left knob controls the temperature of the air to the
rear passengers. Turning the knob to the left will
make the air cooler. Turning the knob to the right will
make the air warmer.
The right knob controls the air delivery to the rear
passengers. Turning the knob all the way to the
left will shut off airow to the rear passengers.Operating with the rear air delivery off may make the
entire vehicle warm or cool less quickly. It may also
increase the air rush sound of the front system.
Y(Vent):This mode directs all the rear passenger
airow to the outlets in the console. This is the normal
position for cool down conditions.
\(Bi-Level):This mode directs airow to the console
outlets and the oor.
[(Floor):This mode directs all of the airow to the
oor. This is the normal position for warm up conditions.
The amount of airow to the rear passengers is
controlled automatically by the front climate control
system, regardless of optional equipment. Airow to the
rear system will be turned off when defrost is selected
on the front climate control panel to direct air to clear the
windshield.
Vehicles equipped with a rear climate control panel,
also, have heated rear seats. There are two buttons,
each with three indicator lights, located between the two
climate control knobs on the rear climate control
panel, to control the rear heated seats. SeeHeated
Seats on page 1-7for additional information.
Be sure to keep the area under the front seats clear of
any objects so the air in your vehicle can circulate
effectively.
3-57

Passenger Compartment Air Filter
Your vehicle may be equipped with a passenger
compartment air lter. There are two types of lters
available. There is a standard dust lter that traps small
particles including pollen. There is, also, a dust/odor
lter available that traps dust and pollen and also uses
a charcoal element to help reduce many offensive
odors from entering your vehicle. Like your vehicle’s
engine air cleaner/lter, it will need to be changed
periodically. For information on how often to change the
passenger compartment air lter, seeScheduled
Maintenance on page 6-4.
Notice:Driving without a passenger compartment
air lter in place can cause water and small
particles, like paper and leaves, to be pulled into
your climate control system which may cause
damage to it. Make sure you always replace the old
lter with a new one.The access panel for the passenger compartment air
lter is located under the hood near the windshield,
on the passenger’s side of the vehicle. SeeEngine
Compartment Overview on page 5-12for more
information on location. SeeDoing Your Own Service
Work on page 5-4for information on doing your
own service work.
3-58

To reduce the charging overload, use the vehicle’s
accessories. Turn on the exterior lamps and radio, set
the climate control on AUTO and the fan speed on the
highest setting, and turn the rear window defogger on.
The normal battery voltage range is 11.5 to 15.5 volts
when the engine is running. You can monitor battery
voltage on the DIC by pressing the information button
until you nd BATTERY VOLTS.
BATTERY VOLTAGE LOW
This symbol appears with
the BATTERY VOLTAGE
LOW message.
When this message displays, the electrical system is
charging less than 10 volts or the battery has been
drained.
If this message appears immediately after starting
the engine, it is possible that the generator can still
recharge the battery. The battery should recharge
while driving but may take a few hours to do so.Consider using an auxiliary charger (be sure to follow
the manufacturer’s instructions) to boost the battery after
returning home or to a nal destination.
If this message appears while driving or after starting
your vehicle and stays on, have it checked immediately
to determine the cause of this problem.
To help the generator recharge the battery quickly, you
can reduce the load on the electrical system by
turning off the accessories.
The normal battery voltage range is 11.5 to 15.5 volts.
You can monitor battery voltage on the DIC by pressing
the information button until you nd BATTERY VOLTS.
CHANGE ENGINE OIL SOON
When this message displays, it means that service is
required for your vehicle. See your GM dealer. See
Engine Oil on page 5-15andScheduled Maintenance
on page 6-4for more information.
When you reset the CHANGE ENGINE OIL SOON
message by clearing it from the display, you still must
reset the engine oil life system separately. For more
information on resetting the engine oil life system, see
Engine Oil Life System on page 5-18.
3-80

PRESS START AND BRAKE TO START
ENGINE
When this message displays, it means that you need to
press down on the brake pedal while pressing the
start button on the electronic keyless ignition when trying
to start your vehicle. SeeStarting the Engine on
page 2-24for more information.
RADAR CRUISE NOT READY
When this message displays, it means that the Adaptive
Cruise Control system will not activate due to a
temporary condition. Your vehicle does not require
service. This message will also display when either of
the following conditions occurs:
The driver turns off the head-up display (HUD)
while the Adaptive Cruise Control is engaged.
The driver attempts to engage the Adaptive Cruise
Control while the HUD is off.
If this message appears when you attempt to activate
the system, continue driving for several minutes
and then try activating the system again.
RIGHT REAR DOOR AJAR
This symbol appears with
the RIGHT REAR DOOR
AJAR message.
When this message displays, it means that the
passenger’s side rear door was not closed completely.
You should check to make sure that the door is
closed completely.
SERVICE AC (Air Conditioning)
SYSTEM
This message will display when the electronic sensors
that control the air conditioning and heating systems are
no longer working. Have the climate control system
serviced by your GM dealer if you notice a drop
in heating and air conditioning efficiency.
3-87

If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL (N)
while stopped. If it is safe to do so, pull off the road,
shift to PARK (P) or NEUTRAL (N) and let the
engine idle.
2. Set the climate controls to the highest heat setting
and fan speed and open the windows, as
necessary.
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can drive
normally.
If the warning continues and you have not stopped, pull
over, stop, and park your vehicle right away.
If there is still no sign of steam, you can idle the engine
for three minutes while you are parked. If you still
have the warning,turn off the engine and get everyone
out of the vehicleuntil it cools down.
You may decide not to lift the hood but to get service
help right away.Overheated Engine Protection
Operating Mode
This operating mode allows your vehicle to be driven to
a safe place in an emergency. Should an overheated
engine condition exist, an overheat protection mode
which alternates ring groups of cylinders helps prevent
engine damage. In this mode, you will notice a loss
in power and engine performance. A low coolant and/or
engine overheat warning will indicate that an overheat
condition exists. Driving extended miles (km) and/or
towing a trailer in the overheat protection mode should
be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any
repair. The engine oil will be severely degraded.
Repair the cause of coolant loss and change the oil.
SeeEngine Oil on page 5-15.
5-26

Uniform Tire Quality Grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance.
(This applies only to vehicles sold in the United States.)
The grades are molded on the sidewalls of most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter-type
snow tires, space-saver or temporary use spare tires,
tires with nominal rim diameters of 10 to 12 inches
(25 to 30 cm), or to some limited-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specied government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.
5-70

The underhood fuse block is located in the front of the
engine compartment on the passenger’s side of the
vehicle. SeeEngine Compartment Overview on
page 5-12for more information on location, and removal
procedure for the front compartment underhood sights
shields.
To access the fuses, push in the tabs located on each
side of the fuse block cover. Then, lift the cover off.
Fuses Usage
BLOWER Blower Motor
R REAR Passenger’s Side Rear Fuse Block
I/P OUTLET Front Auxiliary Outlet
CCP Climate Control, Headlamp Leveling
PRE 02/CAM Oxygen Sensor, CAM Phasers
ENG W/H Engine W/H
R REAR Passenger’s Side Rear Fuse Block
WPR SW Wiper/Washer Switch
BODY W/H Body W/H
FOG LAMP Fog Lamps
OUTLET Rear Auxiliary Outlet
EVEN COILSEven Ignition Coils, Even Fuel
Injectors
L REAR Left Rear Fuse Block
WPR MOD Wiper Module
POST 02 Oxygen Sensor
Fuses Usage
COMP CLTCH Air Conditioner Compressor Clutch
STARTER Starter Solenoid
ABS Anti-Lock Brake Pump
L REAR Driver’s Side Rear Fuse Block
BODY W/H Body W/H
RAIN SSRRain Sensor, Headlamp Washer,
Tire Pressure Monitor
CCP Climate Control
SMT BM-OPT Smart Beam Relay (Option)
EXT LIGHTSLow Beam Relay, High Beam Relay,
Park Lamp Relay
VOLT CHECK Instrument Panel Module
ECM/TCMEngine Control Module,
Transmission Control Module,
Easy Key Module, Instrument
Panel Cluster
SPARE Spare
SPARE Spare
LT PARK Left Park Lamp, Left Taillamp
LIC DIMMINGLicense Plate, Instrument Panel
Dimming
IPM ALDLInstrument Panel Module Assembly
Line Data Link Connector
HUDHeads-Up Display, Column Lock
Module
5-97

Child Restraints (cont.)
Older Children.............................................1-26
Securing a Child Restraint Designed for
the LATCH System...................................1-40
Securing a Child Restraint in a Rear
Seat Position...........................................1-40
Securing a Child Restraint in the Right
Front Seat Position...................................1-43
Top Strap...................................................1-35
Top Strap Anchor Location............................1-37
Where to Put the Restraint...........................1-34
Cigarette Lighter.............................................3-49
Cleaning
Aluminum or Chrome-Plated Wheels..............5-91
Exterior Lamps/Lenses.................................5-89
Fabric/Carpet..............................................5-87
Finish Care.................................................5-89
Inside of Your Vehicle..................................5-85
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-88
Leather......................................................5-87
Speaker Covers..........................................5-88
Tires..........................................................5-91
Underbody Maintenance...............................5-92
Washing Your Vehicle...................................5-89
Weatherstrips..............................................5-88
Windshield and Wiper Blades........................5-90
Wood Panels..............................................5-88Cleaning (cont.)
Climate Control System
Air Filter, Passenger Compartment.................3-58
Dual..........................................................3-50
Outlet Adjustment........................................3-56
Rear..........................................................3-57
Comfort Guides, Rear Safety Belt.....................1-23
Compact Spare Tire........................................5-84
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-45
Coolant
Engine Temperature Gage............................3-67
Engine Temperature Warning Light.................3-67
Heater, Engine............................................2-25
Surge Tank Pressure Cap.............................5-24
Cooling System..............................................5-27
Cruise Control................................................3-16
Cruise Control, Adaptive..................................3-20
Cruise Control, Forward Collision Alert (FAC)
System........................................................ 3-9
Cruise Control Light........................................3-72
Cupholder(s)..................................................2-45
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
3

Customer Assistance Information (cont.)
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to
General Motors........................................7-10
Reporting Safety Defects to the
Canadian Government..............................7-10
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Service.......................................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-38
Defensive Driving............................................. 4-2
Diversity Antenna System...............................3-118
Doing Your Own Service Work........................... 5-4
Door
Locks........................................................2-11
Power Door Locks.......................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-12
Driver
Position, Safety Belt.....................................1-13
Driver Information Center (DIC).........................3-73
DIC Controls and Displays............................3-74
DIC Warnings and Messages........................3-78
Other Messages..........................................3-91Driving
At Night.....................................................4-16
City...........................................................4-20
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-21
Hill and Mountain Roads..............................4-23
In Rain and on Wet Roads...........................4-17
Rocking Your Vehicle to Get it Out.................4-30
Winter........................................................4-25
Dual Climate Control System............................3-50E
Electrical System
Add-On Equipment......................................5-95
Fuses and Circuit Breakers...........................5-95
Headlamp Wiring.........................................5-95
Power Windows and Other Power Options......5-95
Rear Underseat Fuse Block..........................5-99
Underhood Fuse Block.................................5-96
Windshield Wiper Fuses...............................5-95
Engine
Air Cleaner/Filter.........................................5-20
Battery.......................................................5-37
Check and Service Engine Soon Light............3-68
Coolant......................................................5-22
Coolant Heater............................................2-25
4