2009 CADILLAC CTS Owners Manual

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.
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To replace the passenger compartment air lter:
1. Turn the ignition to ON/RUN with the engine off.
2. Turn on the windshield wipers and turn the
ignition off again when the wipers are straight up
on the windshield.
This allows access to the leaf screen.
The passenger compartment air lter is located
under the screen.
3. Open the hood to access the engine compartment.
SeeHood Release on page 5-12for more
information.
4. Remove the three screws that hold the screen in
place and lift off the screen by lifting and sliding it
toward the center of the vehicle.
5. Pull out on the two tabs located on each end of the
lter cover.
6. Lift the lter cover off by pulling it straight up.
7. Remove the old lter and insert a new one.
SeeMaintenance Replacement Parts on page 6-16
for the correct part number for the lter.
8. Reverse Steps 1 through 6 to reinstall the cover.Warning Lights, Gages, and
Indicators
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
the warning lights and gages could prevent injury.
Warning lights come on when there may be or is a
problem with one of the vehicle’s functions. Some
warning lights come on briey when the engine is
started to indicate they are working.
Gages can indicate when there may be or is a problem
with one of the vehicle’s functions. Often gages and
warning lights work together to indicate a problem with
the vehicle.
When one of the warning lights comes on and stays on
while driving, or when one of the gages shows there
may be a problem, check the section that explains what
to do. Follow this manual’s advice. Waiting to do
repairs can be costly and even dangerous.
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Instrument Panel Cluster
The instrument panel cluster is designed to indicate how the vehicle is running. It shows how fast the vehicle is
going, how much fuel the vehicle has used and many of the other things needed to drive safely and economically.
United States Automatic Transmission Cluster shown, Manual and Canada similar
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United States V–Series Automatic Transmission Cluster shown, Manual and Canada similar
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Speedometer and Odometer
The speedometer shows the vehicle speed in either
miles per hour (mph) or kilometers per hour (km/h).
The odometer shows how far the vehicle has been
driven, in either miles (used in the United States) or
kilometers (used in Canada).
If the vehicle has to have a new odometer installed,
the new one may read the correct mileage. This is
because the vehicle computer has stored the mileage
in memory.
While the Driver Shift Control (DSC) feature is active,
the odometer changes to show the gear range.
SeeAutomatic Transmission Operation on page 2-36
for more information.
Trip Odometers
The trip odometer can record the number of miles or
kilometers traveled for up to two trips.
The trip odometer is part of the Driver Information
Center (DIC), for more information seeDIC Operation
and Displays on page 3-51.
For vehicles that have the navigation system, see your
Navigation System manual for more information.
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Tachometer
The tachometer displays the engine speed in revolutions
per minute (rpm).
Notice:If the engine is operated with the tachometer
in the shaded warning area, the vehicle could be
damaged, and the damages would not be covered by
the vehicle warranty. Do not operate the engine with
the tachometer in the shaded warning area.The CTS-V tachometer has tracer lights that follow the
movement of the tachometer indicator. The tracer lights
can be turned off in the DIC Vehicle Customization.
SeeDIC Vehicle Customization on page 3-72for more
information.
For the CTS-V, the tracer lights also ash when it is
time to up-shift to avoid the engine speed limit.
SeeAutomatic Transmission Operation on page 2-36
orManual Transmission Operation on page 2-40
for more information.
Engine Speed Limiter
This feature prevents the engine speed from reaching
an unsafe level. If the level is too high, the throttle closes
or limits the fuel supply until the engine speed returns
to a safe level. Throttle operation and fuel supply returns
to normal when engine speed is lowered.
For the CTS-V, the tachometer tracer lights ashes prior
to reaching engine speed limit. The tracer lights also
ash on automatic transmission vehicles while in
the DSC or Tap Shift modes. United States and
Canada Automatic,
V-Series Similar
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Safety Belt Reminders
Safety Belt Reminder Light
When the engine is started, a chime sounds for
several seconds to remind people to fasten their safety
belts, unless the driver’s safety belt is already buckled.
The safety belt light comes
on and stays on for
several seconds, then
ashes for several more.
This chime and light are repeated if the driver remains
unbuckled and the vehicle is in motion. If the driver’s
safety belt is already buckled, neither the chime nor the
light comes on.
Passenger Safety Belt Reminder Light
Several seconds after the engine is started, a
chime sounds for several seconds to remind the front
passenger to buckle their safety belt. This only occurs
if the passenger airbag is enabled. SeePassenger
Sensing System on page 1-67for more information.
The passenger safety belt light, located on the instrument
panel, comes on and stays on for several seconds and
then ashes for several more.
This chime and light are
repeated if the passenger
remains unbuckled and
the vehicle is in motion.
If the passenger safety belt is buckled, neither the
chime nor the light comes on.
The front passenger safety belt warning light and chime
may turn on if an object is put on the seat such as a
briefcase, handbag, or grocery bag. To turn off the
warning light and/or chime, remove the object from the
seat or buckle the safety belt.
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Airbag Readiness Light
The system checks the airbag’s electrical system for
possible malfunctions. If the light stays on it indicates
there is an electrical problem. The system check
includes the airbag sensor, the pretensioners, the
airbag modules, the wiring and the crash sensing
and diagnostic module. For more information on the
airbag system, seeAirbag System on page 1-58.
The airbag readiness light
ashes for a few seconds
when the engine is
started. If the light does
not come on then, have it
xed immediately.{CAUTION:
If the airbag readiness light stays on after the
vehicle is started or comes on while driving, it
means the airbag system might not be working
properly. The airbags in the vehicle might not
inate in a crash, or they could even inate
without a crash. To help avoid injury, have the
vehicle serviced right away.
If there is a problem with the airbag system, an airbag
Driver Information Center (DIC) message can also come
on. SeeDIC Warnings and Messages on page 3-58
for more information.
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