2009 CADILLAC CTS climate control

Windshield Washer
{CAUTION:
In freezing weather, do not use your washer until
the windshield is warmed. Otherwise the washer
uid can form ice on the windshield, blocking your
vision.
K(Washer Fluid):Press the button with this symbol,
located at the end of the windshield washer lever, to
wash the windshield. The washer uid sprays onto the
windshield and the wipers run for a few cycles to clear the
windshield. Press and hold
Kfor more wash cycles.
Washer Fluid Low Add Fluid displays on the Driver
Information Center (DIC) when the washer uid is low.
SeeDIC Warnings and Messages on page 3-58.
If the headlamps are on while the windshield is being
washed, the headlamp washers, if the vehicle has them,
will also turn on. See “Headlamp Washer” following for
more information.
Heated Windshield Washer
For vehicles with the heated windshield washer uid
system it can be used to help clear ice, snow, tree sap,
or bugs from the windshield.
The button is located on
the climate control system
panel.
Push
_to begin four heated wipe cycles. Heating
Washer Fluid Wash Wipes Pending displays on the DIC.
SeeDIC Warnings and Messages on page 3-58.
The rst heated wipe cycle can take up to 40 seconds
to occur, depending on the outside temperature.
3-12

Reading Lamps
The reading lamps are located on the overhead console.
These lamps come on automatically when any door is
opened.
For manual operation, press the button next to each
lamp to turn it on or off.
If the reading lamps are left on, they automatically shut
off 10 minutes after the ignition has been turned off.
Electric Power Management
The vehicle has Electric Power Management (EPM) that
estimates the battery’s temperature and state of charge.
It then adjusts the voltage for best performance and
extended life of the battery.
When the battery’s state of charge is low, the voltage is
raised slightly to quickly bring the charge back up. When
the state of charge is high, the voltage is lowered slightly
to prevent overcharging. If the vehicle has a voltmeter
gage or a voltage display on the Driver Information
Center (DIC), you may see the voltage move up or down.
This is normal. If there is a problem, an alert will be
displayed.The battery can be discharged at idle if the electrical
loads are very high. This is true for all vehicles.
This is because the generator (alternator) may not be
spinning fast enough at idle to produce all the power that
is needed for very high electrical loads.
A high electrical load occurs when several of the
following are on: headlamps, high beams, fog lamps,
rear window defogger, climate control fan at high speed,
heated seats, engine cooling fans, trailer loads, and
loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator’s output
and the vehicle’s electrical needs. It can increase
engine idle speed to generate more power, whenever
needed. It can temporarily reduce the power demands of
some accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels
of corrective action, this action may be noticeable to the
driver. If so, a Driver Information Center (DIC) message
might be displayed, such as BATTERY SAVER ACTIVE,
BATTERY VOLTAGE LOW, or LOW BATTERY. If this
message is displayed, it is recommended that the driver
reduce the electrical loads as much as possible. SeeDIC
Warnings and Messages on page 3-58.
3-21

Battery Run-Down Protection
This feature helps to prevent battery drain if accessory
lamps are left on. If accessory lamps such as the
vanity mirror, cargo, reading, console, or glove box
are left on, they automatically time-out after about
20 minutes. To reset the battery protection, all of the
above lamps must be turned off or the ignition must be
in the ACC/ACCESSORY position.
Accessory Power Outlet(s)
Accessory power outlets can be used to connect
auxiliary electrical equipment, such as a cellular
telephone.
There are three accessory power outlets. There is an
outlet located in the front storage area below the climate
control system, one inside the center console storage
bin, and one on the rear of the center console.
To use an outlet, remove the protective cap. When not
in use, always cover the outlet with the protective cap.
The accessory power outlet is operational at all times.Notice:If electrical devices are left plugged into
a power outlet, the battery may drain causing
the vehicle not to start or damage to the battery.
This would not be covered by the warranty.
Always unplug all electrical devices when turning
off the vehicle.
Certain electrical accessories may not be compatible
with the accessory power outlet and could result
in blown vehicle or adapter fuses. If you experience
a problem see your dealer/retailer for additional
information on accessory power outlets.
Notice:Adding any electrical equipment to the
vehicle can damage it or keep other components
from working as they should. The repairs would not
be covered by the vehicle warranty. Do not use
equipment exceeding maximum amperage rating of
20 amperes. Check with your dealer/retailer before
adding electrical equipment.
Notice:Improper use of the power outlet can cause
damage not covered by the warranty. Do not hang
any type of accessory or accessory bracket from the
plug because the power outlets are designed for
accessory power plugs only.
3-22

Climate Controls
Dual Climate Control System
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
A. Display
B. Fan Control
C. Power
D. AUTO
E. PASS (Passenger
Climate Control)
F. Defrost
G. Air Delivery Mode
ControlH. Temperature Control
and Heated Seat
I. Air Conditioning
J. Recirculation/
Outside Air
K. Heated Windshield
Washer
L. Rear Window
Defogger
Automatic Operation
AUTO (Automatic):The system automatically controls
fan speed, air delivery, and air conditioning in order
to heat or cool the vehicle to the desired temperature.
When the indicator light is on, the system is in full
automatic operation. If the air delivery mode or fan
setting is manually adjusted, the auto indicator turns
off and displays will show the selected settings.
1. Press the AUTO button.
2. Adjust the temperature to a comfortable setting
between 70°F (21°C) and 80°F (27°C).
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, it remains in manual mode at that
temperature and it will not go into automatic mode.
To avoid blowing cold air in cold weather, the system
delays turning on the fan until warm air is available.
The system starts out blowing air at the oor, but can
automatically change modes as the vehicle warms
up to maintain the chosen temperature setting.
The length of time needed for warm up depends 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.
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English can be changed to metric units through the
Driver Information Center (DIC). SeeDIC Vehicle
Customization on page 3-72.
Q/R(Temperature Control):The temperature can be
adjusted separately for the driver and the passenger.
Press to increase or decrease the automatic temperature
settings.
PASS (Passenger Climate Control):Press to set a
different temperature for the passenger. Then adjust
the passenger temperature buttons to a comfortable
setting.
Pressing the PASS button again automatically sets the
passenger’s temperature to the driver’s setting.
Turning the passenger’s temperature display off does
not shut the passenger’s climate control system off.
Manual Operation
O(Power):Press to turn the climate control system on
or off. When the climate control system is turned off
the air inlet defaults to outside air.
DC(Fan Control):Press the buttons to increase or
decrease the fan speed. Pressing either button cancels
automatic operation and the system goes into manual
mode. Press AUTO to return to automatic operation.
The blower may reduce during an Onstar
®session
to limit background noise.
If the airow seems low when the fan speed is at the
highest setting, the passenger compartment air
lter might need to be replaced. For more information,
seePassenger Compartment Air Filter on page 3-29
andScheduled Maintenance on page 6-4.
HG(Air Delivery Mode Control):Press the buttons to
change the direction of the airow. The current mode
appears in the display screen. Changing the mode
cancels the automatic operation and the system goes
into manual mode. Press AUTO to return to automatic
operation.
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Heated and Ventilated Seats:Press to heat or
ventilate the seat. SeeHeated and Ventilated Seats
on page 1-7.
_(Heated Windshield Washer, If Equipped):
For more information, seeWindshield Washer on
page 3-12.
Remote Start Climate Control Operation:For
vehicles with remote vehicle start feature and it is
activated, the climate control system heats and cools
the inside of the vehicle using the previous settings
of the system before the vehicle was turned off.
SeeRemote Vehicle Start on page 2-14.
The windshield defroster and/or rear window defogger
turn on if it is cold outside. If the vehicle has heated
seats, they turn on if the temperature inside the
vehicle is cooler than 54°F (12.5°C) or if the outside
temperature is cooler than 48°F (9°C).
Sensors
The solar sensor located
on the instrument panel,
near the windshield,
monitors the solar heat.
The interior temperature
sensor located on the
instrument panel to
the right of the steering
wheel, measures the
temperature of the
air inside the vehicle.
3-28

The climate control system uses the information from
these sensors to adjust the fan speed and the air
delivery, in order to maintain the selected temperature.
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 sensors or the automatic climate
control system will not work properly.
Outlet Adjustment
Use the air outlets located in the center and on the side
of the instrument panel to direct the airow. Use the
thumbwheels near the air outlets to open or close off the
airow.
Operation Tips

Clear away any ice, snow, or leaves from air inlets
at the base of the windshield that could block the
ow of air into the vehicle.
Keep the path under the front seats clear of objects
to help circulate the air inside of the vehicle more
effectively.
Use of non-GM approved hood deectors can
adversely affect the performance of the system.
Check with your dealer/retailer before adding
equipment to the outside of the vehicle.
Passenger Compartment Air Filter
The passenger compartment air lter traps most of
the dust and pollen from the air entering the vehicle.
The lter will need to be changed periodically.
SeeScheduled Maintenance on page 6-4.
Using the climate control system without the passenger
air lter installed could let water or other debris enter
the system. This could cause a water leak or noises.
Make sure a new air lter is installed after removing the
old one.
The passenger compartment air lter is located under
the hood below the windshield wiper arm and the screen
on the passenger side of the vehicle. SeeEngine
Compartment Overview on page 5-14for more
information on location.
3-29

Compass Calibration
The compass can be manually calibrated. Only calibrate
the compass in a magnetically clean and safe location,
such as an open parking lot, where driving the vehicle
in circles is not a danger. It is suggested to calibrate
away from tall buildings, utility wires, manhole covers, or
other industrial structures, if possible.
If CAL appears in the DIC display, the compass should
be calibrated.
If the DIC display does not show a heading, for example,
N for North, or the heading does not change after
making turns, there may be a strong magnetic eld
interfering with the compass. Interference may be
caused by a magnetic antenna mount, magnetic note
pad holder, or any other magnetic item. Turn off
the vehicle, move the magnetic item, then turn on
the vehicle and calibrate the compass.To calibrate the compass, use the following procedure:Compass Calibration Procedure
1. Before calibrating the compass, check that the
compass is set to the correct variance zone.
See “Compass Variance (Zone) Procedure” earlier
in this section.
Do not operate any switches such as window,
sunroof, climate controls, seats, etc. during
the calibration procedure.
2. Press the vehicle information button until
Press
VTo Calibrate Compass displays.
3. Press the set/reset button to start the compass
calibration.
4. The DIC will display Calibrating Drive In Circles.
Drive the vehicle in tight circles at less than
5 mph (8 km/h) to complete the calibration. The DIC
will display Calibration Complete for a few seconds
when the calibration is complete. The DIC display
will then return to Press
VTo Calibrate Compass.
3-57